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When using 5.56x45mm mags, the potential to chamber and fire a 300 BLK round in a 5.56x45mm rifle with catastrophic results requires diligent ammunition management by the shooter. Add to cart. There may not be another chance to get these so dont miss your shot to own one of these 50rd drum mags! Use with other calibers such as .300 AAC Blackout is not recommended. . WARNING:Observe safe firearm handling practices at all times. 300 Win Mag Dummy. Our Low Price $29.97 Your Security is Our Priority Our guarantee Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here. Save $8.00 (21%) Description. Magpul PMAG 30 AR 300 B Gen M3 Magazine, .300 AAC Blackout, 30 Rounds, Black. Additionally, they also have the GEN M3 paint pen dot matrix, so you can denote .300 Blackout on the magazine itself, which is an imperative when using a common magazine for multiple calibers. .300 Blackout magazines often have slightly different followers and geometry to allow for smoother feeding of the larger caliber rounds and projectile weights than 5.56mm magazines, helping to avoid feeding issues. 172 Reviews. $29.99. From left to right: 30 Cal Carbine, 300BLK 5.56 NATO, and 7.62x51 cartridges. Sale Since its inception, 300 BLK shooters have had to use a magazine designed for another cartridge, limiting its ultimate performance and compatibility. Its a thing. Well in our case as civilians, why not use it for home defense too? 5,56 has 3000 fps muzzle energy, while 300 AAC Blackout has only 2200 fps. Both use versions of the .223 Remington casing. It also makes the ammo visible. Ruger SR-556 6.8mm SPC 5-Round Magazine. May require modification to work in Robinson Arms XCR, and the SCAR 16. $1.500 Per Round. Add to Cart. These controls take the form of export regulations and license requirements. We offer a wide inventory of all of these magazines from a number of different manufacturers. You must have JavaScript enabled in your browser to utilize the functionality of this website. Theres no reason not to have a purpose-designed magazine for your Blackout setup. We aim for all thriller, no filler, as they say. Find additional .223 magazines for AR-15 rifles. *Optimized for use only with 5.56x45 NATO/.223 Remington cartridges. $148.99, Sale In fact, while the bullet is larger, the .300BLK round is shorter than the 5.56 NATO meaning theres actually more room in a 5.56 magazine when loading .300BLK, which can lead to the above misalignment of the .300BLK when riding a 5.56 mag rib. Compliance Notices and Magazine Restrictions, Wide compatibility with most 'STANAG 4179' platforms such as the AR15, M4, M16, SCAR MK16/16S, HK416, MR556, M27 IAR, IWI Tavor, and others**. Customers acquiring ITAR goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. The Magpul PMAG D-60 AR/M4 5.5645 Nato 300 Drum Magazine is a high-capacity magazine designed for AR-15 rifles and carbines. Sale! O ne cartridge that has taken ahold of the modern sporting rifle industry and appears to have strong staying power is the .300 AAC Blackout round. Specifically engineered for use with heavy subsonic .300 Blackout ammunition (200+ grain), the Lancer L5AWM 300BLK magazine features an updated internal geometry which allows longer heavier cartridges to stack properly, increasing feeding reliability when compared to a traditional .223/5.56 . We may earn a commission on purchases from a link. Brand: Magpul Magazines. And the rifles were damaged because the magazine was overloaded with .300 Blackout in an AR15 chamber of .223/5.56. AR-15 50 Round 223/556/300 (non subsonic) Drum Magazine - Limited Chevron Pattern Edition. The window in this lightweight polymer magazine is also handy for keeping track of remaining ammunition. Search by Manufacturer. DB380 6 Round Magazine with Finger Extension, .380 $ 15.99 $ 13.59. This drum mag is a robust, resilient, sturdy, and authentic product of F5 that delivers extraordinary performance on the range. We, at F5 Manufacturing, have a long history of manufacturing firearm accessories and non-firearm products that meet the functional needs and design aesthetics of shooting enthusiasts. It is the original design of F5 and is machined out of billet 6061 aluminum for unmatched functionality and rigidity. Will not work in IMI Tavor . Instead of opting for an aggressive front texture or specific ribbing, D&H keeps cross-loading at bay with a simple approach: include a visual indicator of the caliber on the magazine from the factory. 300 Win Short Mag Dummy. PSA is your 300 Blackout headquarters for rifles, pistols, kits, ammo, and more. Distinct rib design provides the shooter a visual and tactical difference from any other PMAG to mitigate dangerous cross-loading. Lowest price in 30 days. Running windowed PMAGs in my .300BLK PSA PA-15. Shipping: Free to High Modify Search . The .300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P. . $18.99, Special Price Breaking calibers out this way further prevents mix-ups and improves safety by making it easy to pair a specific caliber with the correct magazine. Quality options can be found for as little as $15 (or less with a decent sale) and you should have no fewer than 5 mags for every gun you own, so theres really no excuse not to stack them deep. Skip to the beginning of the images gallery, As part of the express consideration provided for receipt of Magpul's goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Magpul in violation of U.S. law is prohibited. $6.99 $ 6. A standard .300 Blackout magazine, for example, might consist of little more than a polymer mag with the correct internal geometry for the Blackout while a more Gucci mag (is that a thing?) Copy this link and share it with your friends. $14.99. The PMAG 30 AR 300 B's distinct . Notify Me. Be the first to know about sales, surplus items, and new products. $13.99. Are we proponents of using the right tool for the job whenever possible? This magazine also works with M16, an adapted rifle from AR15 with the same caliber. In addition to the performance gained by a dedicated mag, the PMAG 30 AR 300 B also offers a safer way to feed your 300 BLK rifle. 32 ACP / Automatic Dummy. The PMAG D-60 is a durable, lightweight, highly reliable 60-round 5.56x45 NATO/.223 Remington* polymer drum magazine for AR15/M4 compatible weapons. Will only hold 300 AAC Blackout rounds. The Magpul GEN M3 is a go-to magazine in any caliber and their .300 BLK mag is no different. Real talk time, kids: most AR magazines, regardless of caliber, are relatively similar its the subtle differences that truly distinguish them from one another. Buyer's Club $17.99 Non-Member $19.99 . $31.99 On Sale: $20.17 Out of Stock. . Suitable for AR-15 Rifles or other 300 Blackout Rifle enthusiasts, these rounds are supersonic, which means they will be more consistent in medium-range target practice. The updated internal magazine geometry allows these longer heavier bullets to stack properly, which increases feeding reliability when compared to a . In addition to avoiding making a mistake and putting the wrong bullets in the wrong firearm, I like the idea of a company spending a little more time and effort ensuring that our magazines will be reliable over time. The .300 Blackout is one of the more interesting calibers in recent years, officially approved by SAAMI in 2011, and born out of a need for a specialized close-combat round for special operations units, the .300 AAC Blackout has become one of the most popular chamberings for the AR-15 platform - and for a good Continue reading The Best .300 Blackout Magazines . might offer windows or translucent sides, steel feed lips, or simply more capacity. We only stock the proven quality when it comes to 300 Blackout and 223 5.56 magazines. You do not pay anything extra and your purchase helps support our work. These controls take the form of export regulations and license requirements. $42.00. .300 AAC Blackout ammo is an excellent close range performer and one of the best calibers to use with a suppressor. $179.85 $0.59. When reviewing guns or gear, we get our hands on as many products as possible, but there are times when certain products or categories are a real challenge be it availability, cost, or simply a lack of resources we can get stymied going hands-on with all the potential candidates. Magpul Industries cannot process sales/shipments prohibited by law. Brand: Hexmag Magazines. PMAG D-60 AR/M4 GEN M3 is available to buy in increments of 1, Be the first to know when this product is available, Smaller capacity,same GEN M3reliability, This site is protected by reCAPTCHA and the Google. Add to cart. Magpul PMAG Gen M3 AR-15 .300 AAC Blackout 20-Round Magazine . Add to cart. Like its smaller-calibered brethren, the .300 BLK Pmag line retains all of the great Magpul GEN M3 features like their crush-resistant polymer & aggressive front and rear texture. Copyright 2023 American Firearms LLC. Add to Cart. When using 5.56 mags, the potential to chamber and fire a 300 BLK round in a 5.56 rifle with catastrophic results requires diligent ammunition management by the shooter. By Adam Scepaniak. This drum mag is made in the US with the most groundbreaking innovation using the latest 5-Axis machining technology. In subsonic AR systems, it offers higher ballistic performance and stopping power than the normal 9mm (the . Ambidextrous charging handle. BEST BUDGET OPTION: Daniel Defense 5.56mm 32rd Magazine. JavaScript seems to be disabled in your browser. FEATURED LONG GUN Italian M91 CarcanoGET YOURS, Limited Edition "Alien Green" 30 Round AK-47 MagazineGET YOURS. Anyone who says youll negatively impact magazine capacity when loading .300BLK in a 5.56 stick has never actually tried to do it. Rifle Parts; Hunting . Copyright 2022 Classic Firearms, LLC. The .300 Blackout has become one of the most popular chamberings for the AR-15 platform in recent years. The PMAG 30 AR 300 B GEN M3 is a dedicated magazine for rifles chambered in 300 Blackout. When using 5.56x45mm mags, the potential to chamber and fire a 300 BLK round in a 5.56x45mm rifle with catastrophic results requires diligent ammunition management by the shooter. The classic is, of course, the 5.56 NATO/.223 Rem, based on the original designs going back to the 1950s and 60s. MSRP: $20.99. Designed to fit the AR-15 rifle. Dont be fooled by gimmicky mags with strangely high price points: even the most proven .300 Blackout mag shouldnt cost you much more than $20. $65.99, Special Price Subscribe to our newsletter to recieve special offers and discount codes by email. $16.99, Special Price Theyre made out of high-quality, black anodized aluminum for years of service and a solid lock into any AR mag well. If you are in the market, get your AR 223 magazine ordered today. 300 blackout accessories 300 blackout magazine 300 blackout drum 300 aac blackout magazine. Description: Designed for medium-range target practice, training, and plinking, Stryker 300 AAC Blackout Tracer ammunition is 100% American-made. 10 Pack 300 Blackout Magazine Bands with .300 Blackout Grooved Printing On Both Sides -Quick to Find The Right Mag,Never Pick Up Wrong Mag Again! +7 colors/patterns. Since the case and cartridge dimensions of the 5.56 and the .300 AAC Blackout magazines are almost the same, the .300 AAC is technically compatible with 5.56 magazines. Magpul Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product. L5AWM 300BLK 30 Magazine. Sign up to receive promotional emails roughly once a month. All Right to Bear rimfire products are compatible with CMMG 22 conversion kits and other rimfire components. No chance of splinters. Include description. The RTBA brand brings you the only lightweight .22LR pencil barrel on the market at an affordable price! 2023 GunMag Warehouse. 41 Reviews. Variants of this versatile magazine work in 5.5645/.223 and most 300 AAC Blackout*. Visit our 22/rimfire category today and take advantage of our lightning fast shipping! Your high capacity magazines super store. As part of the express consideration provided for receipt of Magpul's goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Magpul in violation of U.S. law is prohibited. Downrange Comparison. Rating: 100% . Dedicated magazine for rifles chambered in 300 BLK that supports the differing geometries found in that caliber. The improvised and revised version of this mag has a better feeding system that delivers durability, reliability, and the fun of shooting without any errors. $169.99, Sale We use cookies to improve your website experience. Search By Capacity. If you've ever wondered which is better 556 or 300 Blackout, you came to the right place. Gorilla Ammunition .300 BlackOut 115gr, Controlled Chaos, Pig Punisher - 20 Round Box. All rights reserved. We highly recommend, Lancer L5AWM AR-15 .300 BLK 30 Round Magazine, Magpul PMAG M3 AR-15 300BLK 30 Round Magazine, Hexmag Series 2 AR-15 .223/5.56 Magazine (6 Pack), Daniel Defense DD AR-15 .223/5.56 32 Round Magazine, Hexmag Series 2 AR-15 .223/5.56 30 Round Magazine, 10 Pack Magpul Pmag M3 AR-15 300BLK 30 RD Mag, Hexmag Series 2 AR-15 .223/5.56 10/30 10 Round Magazine, CPD Duramag SS AR-15 .223/5.56/.300BLK 20 Round Magazine, Lancer L5AWM AR-15 .300BLK 20 Round Magazine, Magpul PMAG 20 AR .300BLK GEN M3 20 Round Magazine, Daniel Defense DD AR-15 .223/5.56 10/32 10 Round Magazine, Ruger Mini-14 300 AAC Blackout 20 Round Magazine. Hexmag Series 2 AR-15 .223/5.56 Magazine (6 Pack) Ships in 10 days or less. Highlighted is the .223 mag's internal shoulder rib, which lines up perfectly on the .223 cartridge but can cause some feeding issues with the .300BLK. Gunmag Premium Vintage Tri-Blend Logo T-Shirt, Bulgarian AK-47 7.62x39mm 40-Round Clear Polymer Magazine, Bulgarian AK-47 7.62x39mm 30-Round Steel Magazine, ETS Sig Sauer P320, P250 9mm 40-Round Extended Magazine, Night Fision Optics Ready Stealth Night Sight Set for HK VP9, Crucial Concealment Covert Right-Handed OWB Holster for Glock 43/43X Pistols, Duramag AR-15 .223 / 5.56 10-Round Stainless Steel Magazine with Black Follower. Sporting Goods. Find 300 AAC Blackout/Whisper (7.62X35mm) Ammo for sale, in-stock and ready to ship at Ammo Freedom. 300 Blackout Ammo Common Uses & History The AR-15 platform can be adapted to fire a variety of calibers other than the original .223/5.56.One of the most widespread of these alternatives is the .300 AAC Blackout, also known as the 300 BLK and the 7.62x35mm. For most gun enthusiasts, most of the time, theres no functional issue with using a 5.56 NATO mag when loading .300BLK. Therein lies the potential for misuse. WARNING:Observe safe firearm handling practices at all times. 300 AAC Blackout Six Pack Pro Kit includes Six pack progressive press, Auto drum powder measure, shell plate, Universal case feed magazine, and Lee breech lock dies (full length sizing die, short charging die, easy adjust dead length bullet seating die, factory crimp die, and instructions with load data). The L5AWM 300BLK magazine has been specifically engineered for use with heavy subsonic .300 Blackout ammunition, particularly with 200+ grain projectiles. Both calibers have approximately the same recoil with most of the recoil energy being directed to the shoulder. Buyer's Club $10.79 Non-Member $11.99 . Designed, tooled, manufactured, and assembled in the USA. So the Blackout would easily retrofit a .30 caliber barrel without needing other changes. 300 AAC Blackout ammo, SAAMI short name 300 BLK, also known as 7.6235mm is a rifle cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. You will like this product if: You are a hunter. Regular Price $39.99 Special Price $16.99. BEST MAGPUL MAGAZINE: Magpul - AR-15 300 BLK PMAG 30 Gen M3 Magazine. One thing to keep in mind with aluminum magazines, theyre durable but can bend and dent rather than break (like polymer magazines might). A list of states and municipalities restricting firearm magazine sales is availablehere. Out of Stock (37) $14.95 . Selected category All. As a dedicated magazine, the D&H AR-15 300 AAC Blackout 20 Round Magazine should be your number 1 choice for most heavy sub-sonic 300 Blackout rounds. Description Brand Capacity Price Count PPM. 39. The 300 Blackout AR magazine is a modern . The .300 AAC BLK offers a .30 caliber round for those who want to perform with a .30 caliber projectile, with equipment like the M4 carbine. The X Products X-15 is an extremely compact and versatile 50 It means any excess metal was removed while during the manufacturing process to ready the mags with bare minimum metal to function properly. We highly recommend Lancer L5AWM 300BLK 30-round and Magpul PMAG 300BLK 30-round magazines. 7.62 X 39 Standard 28 Round Aluminum Magazine Black $ 19.99. This magazine also works . Grabbing another Pmag and painting it for .300 Blackout might not be the best choice. If you are looking for a perfect drum magazine that can shoot .223, 5.56, and .300 AAC blackout, look no further. Fanboy moment over. $ 20.00 - $ 23.00. Absolutely. Just be mindful of laws pertaining to high-capacity magazines in your area to ensure any magazine you decide upon isnt violating any local statutes. Designed for use with Mil-Spec AR (M4 M16) lower receiver. JavaScript seems to be disabled in your browser. Ships with a 30-round Gen3 windowed Magpul PMAG We use only the most trusted contractors to precision manufacture our .22LR barrels, bolt and magazines. Lancer also has a short 20-round magazine. PLEASE NOTE:Certain U.S. jurisdictions restrict firearm magazines sales. Add to Cart . Some of the most popular magazines for the AR are the 5.56 NATO/.223 Rem and the .300 Blackout. $11.99, Sale Many shooters will dedicate specific types or brands of magazines to specific calibers. Most magazines are cheap and plentiful, and the same is true with .300 Blackout mags. In addition to the performance gained by a dedicated mag, the PMAG 30 AR 300 B also offers a safer way to feed your 300 BLK rifle. allows for no separation of ammunition during function to easily handle firing . The casings for both the 5.56mm NATO and .300 AAC Blackout are almost identical. SGM Tactical VEPR 12 Drum Magazine, 12 Gauge, 25 Rounds. Sale. 308 Win (7.62 NATO) Dummy. Add to Cart. However, at 700 meters, 300 AAC Blackout gains the same muzzle energy that 5,56 develops at 500 meters, which is a very good result for long-distance shooting. While standard AR-15 magazines may be used for this cartridge, the potential danger exists to chamber and fire a 300 Blackout round in a 5.56 NATO chamber with catastrophic results.Optimized for 300 AAC Blackout, the PMAG 30 AR 300 B retains all the GEN M3 features adding a distinct rib design and . FREE delivery Wed, Mar 8 on $25 of items shipped by Amazon. 2023 Magpul Industries Corp. All Rights Reserved. Additionally, some of our favorite manufacturers have crafted dedicated .300 BLK magazines. Most AR owners have a lot of black Pmags laying around its not uncommon to have a dozen or more at hand. 3.6 out of 5 star rating (32 reviews) Quick View. Free Shipping Eligible! 2023, The Mag Shack. Feed Lips. EXPORT NOTICE:This is an item controlled for export by the Export Administration Regulations (EAR) under the Commerce Control List (CCL). Wanting something with better performance than 5.56 NATO, top military officials sought a .30-caliber round capable of ballistic performance similar to the Russian 7.62x39mm (think Soviet SKS and AK-47). - Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here 2023 Copyright, entire contents by CTD, Inc. Cheaper Than Dirt! When it comes to performance downrange, the 7.62x39 Vs. .300 Blackout differences show, despite the fact both cartridges are .30-caliber.308-inch. Need something a little more compact? Its 32-round capacity for 5.56mm and 300 Blackout rounds is the most notable enhancement while maintaining the same size as industry-standard 30-round magazines. The 7.62x39 mm SAAMI specs allow it to go slightly wider, which may explain a slight . Marks engraved in loader for 10, 20, 28, 30 rounds. Will not work in IMI Tavor . Lowest price in 30 days. (AY) 300 Blackout Magazine Marking Band American Family Owned Business, (AQ) 6 Pack 300 Blackout Magazine Marking Band Subdued Colors American Family Owned Business, (J) 6 Pack Yellow and Black 300 Blackout Magazine Marking Bands 7.62 X 35mmAMERICAN Family Owned Business, 45 Pack Miaozhun Magazine Marking Bands, 5.56 NATO, .223 Remington, .300 Blackout Magazine Caliber Identification, Bomeek Silicone Magazine Marking for .300 BLK and SUBSONIC and Supersonic Double Sided Magazine Marking Band Kits -12 Pack, Customize your gun with GunSkins DIY vinyl wraps, Discover new colors to organize your magazines, All customers get FREE Shipping on orders over $25 shipped by Amazon. The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine for rifles chambered in 300 Blackout (300 BLK). - 50 Rounds. X Products X-15. We're proud to offer Military/Veterans, First Responders, and Government Employees special pricing. Retailer Updated; HERA USA H2 AR-15 Magazine 5.56 NATO 20 Rounds Polymer Construction OD Green Finish: 20 rnd $ 9.55: 1: $9.55: CheaperThanDirt. For the best experience on our site, be sure to turn on Javascript in your browser. Born out of a need for a specialized close-combat round for special operations units, the .300 AAC Blackout has become wildly popular for the AR-15 platform - and with good reason.. Sign up and receive information on new items and offers from us. (L to R) 5.56 NATO, .300 BLK, .30 Carbine. (See Magpul. To avoid disappointment or steering you in the wrong direction, we bolster our own experience with conversations with experts, comb through reviews on retailer sites & sales data, review industry publications, other blogs, and otherwise surface the best information available. You must have JavaScript enabled in your browser to utilize the functionality of this website. The classic is, of course, the 5.56 NATO/.223 Rem, based on the original designs going back to the 1950s and 60s. . 4.7 out of 5 star rating (50 reviews) Quick View. Customers acquiring controlled goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. Sale! The PMAG D-60 is a durable, lightweight, highly reliable 60-round 5.56x45 NATO/.223 Remington polymer drum magazine for AR15/M4 compatible weapons. OUR TOP PICK: D&H AR-15 300 AAC Blackout 20 Round Magazine. Merch. Impact resistant polymer body. This drum mag is skeletonized. Product was successfully added to your shopping cart. Dismiss, 50 Round 223/556 Drum Magazine Chevron Pattern, CZ BREN 2 Carbine with 2 x 5.56mm Magazines, CZ Bren 2 Modular Stock System (MSS) & MSS Adapter, AR-15 50 Round 223/5.56 Drum Magazine - Limited Edition, 67mm AR-15 Utility (Can) Launcher With Picatinny Foregrip & 25 Blanks, HK-MP5 Tactical Kit 50 Round Drum, Modular Brace System (MBS), Cyberarm Brace, AR and Glock 50 round 9mm Magazine with Exchangeable Magazine Tower, 67mm AR-15 Utility (Can) Launcher With 37mm (Golf Ball) Launcher Adapter, FFL Requirements When Purchasing A Firearm. EXPORT NOTICE: This is an item controlled for export by the International Traffic in Arms Regulations (ITAR). We are producing our crowd favorite Skeletonized AR-15 drum mag in this highly desirable Chevron pattern. - A list of states and municipalities restricting firearm magazine sales is availablehere. Products are selected by our editors. While running a standard magazine is convenient (one of the central features of the .300 BLK is you dont have to change anything on your 5.56 AR beyond the barrel), theres additional safety in dedicated magazines, which help mitigate dangerous cross-loading issues (chambering and firing the wrong ammo, causing a catastrophic out of battery detonation). If I had a dollar for every time I read someone claim that using a 5.56 NATO mag to load .300BLK would reduce the available capacity below the rounds intended, I would have a few more ham sandwiches each week. Bulk Ammunition on sale, including 300 Blackout/Whisper Rifle Rounds. This process makes the products sleek, lighter, and perfectly balanced. Two AR-15 magazines with the black mag showing off a .300 AAC Blackout and the yellow mag housing a .223 Remington. Dedicated, purpose-designed magazine for rifles chambered in 300 Blackout. Ruger Mini-14 Magazine .300 AAC Blackout 20 Rounds Laser Engraved Metal Dark Fin. Constructed of next-generation impact and crush resistant polymer. Along with optimized 300 Blackout performance, the PMAG 30 AR 300 B incorporates all of the GEN M3 features such as our next-generation impact and crush resistant polymer, aggressive front and rear texture, an easily removable slim floor plate, a paint pen dot matrix for marking and identification, and a dust/impact cover. Aolamegs 300 Blackout Magazine Marking Band 6 Pack, 4 pcs 300 Blackout BLK AR15 Lower Graphic - Spartan Style .300 AAC AR Decal | Flag American Sticker | 2020, Ideagle 300 Blackout Magazine Marking Bands, 10 Pack 300 AAC BLK 7.62 X 35 mm, 24 Pack Miaozhun .300 Blackout Magazine Marking Bands 300 BLK Magazine Caliber Identification, 12 Pack Miaozhun .300 Blackout Magazine Marking Bands 300 BLK Magazine Caliber Identification, Aolamegs 300 Blackout Subsonic Magazine Marking Bands 6 Pack. These magazines from D&H offer a 20-round capacity and a bright red follower paired with a specially-calibrated spring which improves follower/spring tracking and feeds the heavy .300 Blackout rounds more effectively than a standard 5.56mm magazine. This magazine is manufactured from a solid piece of billet, which is why it takes time to manufacture it using state-of-the-art CNC technology. If you are looking for 300 Blackout specific mags please check back with us, we are trying to replenish our stock. 300 AAC Blackout 125 Grain FMJ (20)RD SIG Sauer Elite Ball Ammunition, AR15 (30)RD 5.56/.223 Carbon Fiber Hexmag, AR15 (20)RD 300BLK LANCER MAGZINE Opaque BLK, AR15 (30)RD MULTI CAL HexSeries 2 MADAZINE, AR15 (30)RD 5.56/.223 w/Coupler GEN2 Carbon Smocked Magazine ETS, AR15 (30)RD 5.56/.223 w/Coupler GEN2 MagazineETS, AR15 (30)RD 5.56/.223 translucent GEN2 Magazine ETS, SureFire earplugs 26dB Noise Reduction Rating, AR15 (30)RD 300BLK Dedicated PMAG Magpul Industries, 300 AAC Blackout 124 Grain FMJ (20)RD S&B, AR15 (30)RD 5.56/.223 GEN2 Carbon Smocked Magazine ETS.