However, PT&G's system. Stream sports and activities from Aliso Niguel High School in Aliso Viejo, CA, both live and on demand. Available in a multitude of calibers with tough as nails construction, FN magazines are machined to exact specifications to ensure a flawless fit to your FNH firearm, for confident operation in any shooting scenario. So, yes there are good deals to be had. MFG: FOSTECH AR-15 Tomahawk Stock 100% USA Made. $13.99, Sale I plan to convert it to accept detachable magazine with a new bottom metal. $99.99, Special Price If you need inletting, we do offer that service for an additional charge. Repeating Arms Company (owned by FN de Herstal) to FN specifications using Winchester Model 70 actions. The kit can be easily installed, no gunsmith required. The trigger guard does not require significant modifications to you stock, only minor fitting with aftermarket stocks. FN TBM Trigger Guard and Detachable Box Magazine FN SPR, PBR, TSR, Winchester Model 70 Short Action with 5-Round and 10-Round Magazine. $80.99, Sale FN sells both 5 and 10 round additional magazines. The main downside to going the factory route is the cost of the bottom metal kit and the magazines ($350 for a bottom metal conversion and $50 for a 10 round magazine is ridiculous). Since that time we have seen magazines evolve considerably. Outfit your FN SPR/TSR with quality aftermarket and OEM parts and components to ensure reliable function with every round advanced. Purchasing the CDI DBM is easy, a phone call or an email will do the trick. However, due to variations in stock and receiver manufacturing, some gun smithing may be required. "We are pleased to offer this new TBM Conversion Kit," said Ken Pfau, FNH USA Senior Vice President for Law Enforcement and Commercial Sales. Sks Strikeforce Stock IN Destroyer Gray B.2.40.1232, Bcmgunfighter Stock Sopmod Mod 1 Compartment Fde, Jmac Customs Ss-8R Stock With Jmac 1913 Folding Mech Tan A1, Jmac Customs Ss-8R Stock - Skeleton Stock 8" With Rise Tan A1. Does not fit SPRs with hinged floorplate. By adapting your bolt action rifle to accept Accuracy International AICS magazines, you can quickly change the variety of ammunition in your gun for different target types. 18 inch heavy barrel. $10.99, Sale $21.99, Special Price I have an FN A1 SPR rifle, with 4 round detachable box magazine. SAFE90-BLUE, Advanced Technology Tech. As a result, we cannot show you the price in catalog or the product page. s original soft foam overtube for the ultimate cheek weld. Phase 5 Weapon Systems Ambidextrous 90-Degree Safety Selector, Blue Anodized Finish, Levers are Machined from 6061-T6 Billet Aluminum, Central Core is Machined from Carbon Steel ATI Outdoors Strikeforce, TactLite, Stock, Gray, SKS B.2.40.1232Specifications, Multi texture rubber and grooves provide the Tomahawk with a surface that is effective in minimizing slip. Cost? Here is the link: Make sure of the proper application asall sales on PTG Bottom Metal are final, absolutely no returns. Free-Shipping over $250 . If youre searching for an FN magazine for sale for your pistol or AR but dont want to pay a high price, youve landed in the right place. Its as light as B5 Systems Bravo Fixed, Stock, Flat Dark Earth, Mil Spec BRC-1442. If bottom metal does not drop in or has tolerance issues, take the gun to a qualified gunsmith or utilize ourinlettingservice. This magazine is for FN Rifles models chambered in .308 Winchester and holds 4 rounds of ammunition. The magazine is released by pushing the magazine release lever forward which then allows the magazine to drop freely. The Ultralight (AR-UL) Stock is the lightest AR stock ever devised! MGW offers replacement stocks, sights, box magazines, bolts, trigger guards and more for these FN rifles. That rifle was a lever action that utilized a 7 round tubular magazine and saw use in the U.S. Civil War. Whether you need an extra 30 round mag for your SCAR, a pinky extension on your 503, or a 5.7x28mm mag for your FiveseveN, you will find it in the capacity, color, and style you need when shopping online. You can unsubscribe at anytime. FN SPR A1 Available for commercial, law enforcement, and military. They feature steel bodies for durability and low-friction followers for smoother feeding. JavaScript is not enabled on your browser - our site will not work for you as intended. These magazines are compatible with FN SPR, PBR and TSR rifles (not compatible with rifles that have FN TBM installed). JavaScript is disabled. Used, excellent condition. I have the AICS pattern dbm on my FN and it works well. See options above. FN Herstal ProMag SCAR 17 20 Round Magazine $28.99 (Save up to 32%) Price $19.59 In Stock FNH-A4 ProMag Industries FN PS90 10 Round Magazine $58.99 (Save up to 24%) Price $44.99 In Stock 3816101040 FN Herstal FN 509 17 Round Magazine $56.99 (Save up to 12%) Price $49.99 In Stock 1 Review 20-100032-1 FN Herstal FN SCAR 16S 30 Round FDE Magazine This is a factory 4-round magazine for FN SPR/TSR XP rifles. CDI and use aics and have tour action modified for them. MGW offers replacement stocks, sights, box magazines, bolts, trigger guards and more for these FN rifles. "JMac Customs SS-8R Stock with JMac 1913 Folding Mech Tan\u0000(S)keleton(S)tock(8)inch with our 1913 folding mech (not assembled)\u0000\u00002x Integrated QD Sling Socket\u00008\" "JMac Customs SS-8R Stock - Skeleton Stock 8\" with Rise Tan\u0000(S)keleton(S)tock(8)inch with SM-4.5 (not assembled)\u0000\u00002x Integrated QD Sling Socket\u00008\" Length\u0000Drilled and tapped FN Manufacturing Tbm Conversion Kit For Spr 62655-01, Decrease Quantity of FN Manufacturing Tbm Conversion Kit For Spr 62655-01, Increase Quantity of FN Manufacturing Tbm Conversion Kit For Spr 62655-01, FN Herstal Spr Tbm 308Win 10Rd Magazine 6263502, FN Manufacturing Spr A5m XP 308Win 20" Flt 75640, FN Manufacturing Spr A5m XP 308Win 24" Flt 75638, FN Manufacturing Spr A1 308 Dbm 24" 75502, FN Manufacturing Mag 308Win 5Rd Tbm Tsr Spr 6263501, Fmk Ar-1 Extreme Strip Lower Ar-15 Polymer Lower Reciever Black FMKGAR1E, Fab Defense Fxptkm Ptk Ergonomic Pointing Angled OD Green Rubber For M-Lok, Ati Sr-1 Stand Ready AR Buttstock Kit W/ Buffer Tube And Castle Nut ATISR1STKBTCN, Magpul Industries Stock Prs Lite Ar15 Mil-Spec Carbine Odg MAG1159ODG, Magpul Industries Stock Prs Lite Ar15 Mil-Spec Carbine Black MAG1159BLK, Dbst Fsm Ace Fldng Stck Mech W/Boss A500-K, Ar-15 Sopmod Bravo Stock Collapsible Mil-Spec, Cold Steel Frontier Hawk Axe 6 IN Head 22 IN Overall Length 90FH, Phase 5 Weapon Systems 5 Safety Selector Ambi 90 Degree For Ar-15 Blue! At the range using the CDI DBM was flawless, there have been no failures and .308 Win Federal Gold Medal Match feeds easily as does Winchesters White box 147 Gr 7.6251. Advice on running Win style bottom metal on FN SPR. I have an FN A1 SPR rifle, with 4 round detachable box magazine. MSRP: $1,999.00 This detachable mag box bottom metal fits Winchester Model 70 actions and some early FN Police SPR actions. If not in stock, this item is custom made to order. Product was successfully added to your shopping cart. I want to receive the latest FN videos, news and special deals. Your email address will not be published. $199.99, Sale Required fields are marked *, Visit our friends and partners at Nortrack for tracking and other tactical training. Kit replaces the trigger guard assembly. Ended up staying with TBM but from everything I read, the CDI works fine if receiver correctly milled. Single Bushing For Chamber Reamers and Barrel Tools[nopix], Bushing Sets For Chamber Reamers and Barrel Tools[nopix], (SAAMI) Centerfire Pistol & Revolver Headspace Gauges [nopix], (SAAMI) Centerfire Rifle Headspace Gauges [nopix], Shotgun / South American and European Big Bore Headspace Gauges[nopix], 2 Flute - Single End Square Carbide Mill Cutters[nopix], 2 Flute - Double End Square Carbide Mill Cutters[nopix], 2 Flute - Single End Ball Nose Carbide Mill Cutters[nopix], 2 Flute - Double End Ball Nose Carbide Mill Cutters[nopix], 4 Flute - Single End Square Carbide Mill Cutters[nopix], 4 Flute - Double End Square Carbide Mill Cutters[nopix], 4 Flute - Single End Ball Nose Carbide Mill Cutters[nopix], 4 Flute - Double End Ball Nose Carbide Mill Cutters[nopix], 2 Flute 60 Degree Carbide Drill Mills[nopix], 4 Flute 60 Degree Carbide Drill Mills[nopix], 2 Flute 90 Degree Carbide Drill Mills[nopix], 4 Flute 90 Degree Carbide Drill Mills[nopix], High Speed Steel (HSS) Dovetail Cutter[nopix], Remington Barreled Actions - Actions - Receivers, Remington Short Chambered or Stock Ready Barreled Actions, Remington 700 Actions - Blueprinted & Custom, Single Bushing For Chamber Reamers and Barrel Tools, Bushing Sets For Chamber Reamers and Barrel Tools. 48.99 Shipping was reasonable as well. Copyright 2023 FN eStore. For a better experience, please enable JavaScript in your browser before proceeding. However, PT&G's system uses AI AE mk1 single stack magazine, usually found in 5 round (and very pricy). The TBM features a push-button style magazine release and a protective magazine well to aid in quick reloads. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. $49.99, Special Price Fits: FN SPR. JavaScript is disabled. MGW still has some good deals on McMillan stocks inlet for floor plate though! All Winchester bottom metal is ONLY compatible with post-64 Winchester manufacture date. 4.4. Crowned muzzle. The billet is cut using a CNC cutting center and no machining marks are present giving a very nice final finish. CDI will also ship the DBM to your stock maker if desired. I am getting an FN SPR A2 in 308 with a hinged floorplate magazine. 4 Round Detachable Box Magazine. Find a dealer. Specifications 4 Round Detachable Box Magazine. It features a pressure-formed lead core that's bonded to an extremely uniform jacket a single atom at a time. However, due to variations in stock and receiver manufacturing, some gun smithing may be required. Available for commercial, law enforcement, and military. But it needs a bit of tweaking. This Detach Mag Bottom Metal accepts .300WM or .338 3.715 Mag Boxes. All the 4 round detachable mags are the same for the SPR's as well (the DBM's and TBM's are not interchangeable though-which is what I suspect is why you were told they wouldn't work in the A1-because A1's aren't available from FN with the TBM bottom metal-it's a user-installed option for the A1's)If you get the TBM kit (which will fit all SPR's with current DBM bottom metal by swapping that out with the TBM), all TBM mags will work. By law, shipping is NOT ALLOWED outside of the U.S.A. No restocking fee on new and unopened items. Manufacturer part number: 62614-01 4 Round Detachable Box Magazine. Buy FN America SPR Tactical 5-Round .308 Winchester Bo: GunBroker is the largest seller of Rifle Magazines & Rifle Clips Rifle Parts Gun Parts All: 973345458 . Just scroll down to see what's in stock: Read More. I called and spoke with Jeff at CDI and he sent the DBM directly to Manners Composite Stocks who incorporated it in their excellent T4A stock with no trouble at all. The FN Tactical Box Magazine trigger guard (TBM) is a detachable magazine system to upgrade your FN SPR, PBR, TSR or Winchester Model 70 short action from a hinged floor plate or standard DBM. The overall shape is well thought out and the unit is durable. Please enable Javascript and refresh the page for a safe, secure, and complete shopping experience at Midwest Gun Works. You must log in or register to reply here. The FN Special Police Rifle ( FN SPR) is a bolt-action sniper rifle marketed by FNH USA, a subsidiary of the Belgian company FN Herstal . Installation of the TBM trigger guard does not require modification to FN receivers like some other aftermarket detachable magazine systems. All Rights Reserved. Watch online from home or on the go. Contact Info:Based in Sarasota Florida, CDIPrecision Gunworks is owned and operated by Jeffrey Allen. It went in just fine. 6 x 42mm SWFA scope. The Fora platform includes forum software by XenForo. $499.99, Sale Fn America Magazine, 308 Win, 10rd, Fits Tsr/ Psr/ Spr, Black 62635-02Product Type: MagFinish/Color: BlackFit: SBR With TBM OptionCaliber: 308 Win, FN MANUFACTURING SPR A5M XP 308WIN 20" FLT, FN MANUFACTURING SPR A5M XP 308WIN 24" FLT, FN MANUFACTURING MAG 308WIN 5RD TBM TSR SPR. cdiprecisiongunworks.comcdi@cdignition.com941-961-3185. Doesn't work with WSM cartidges. FN Bolt Action Rifles Parts listed here are designed for FN bolt action rifle models like the FN SPR and FN TSR unless noted otherwise. The AI magazine latches positively into the floorplate and is held firmly in place with minimal rattling. The assembly itself is one seriously rugged unit, cnc machined and hard-coated black. With its low profile and the FN logo on the front all in black, you will have a hard time leaving your home without it. For a quicker reload from pocket or pack, make sure you have extra factory magazines for your FN SPR rifles. Sale I'd like to confirm that this kit shown here, is actually made to be compatible with my rifle. The fix is to either install a magnum ejector or just take a few thousandths of the bottom side. The stock went straight to CDI. Installation on a Winchester model 70 may require more modification. The Stealth Style Detachable Magazine Bottom Metal from PTG is the perfect upgrade to your tactical rifle. We will notify you when the product arrives back in stock. Anyone know if extra 10 round magazines are available, for this, alone? We use cookies to help us deliver our services and collect customer data. FNH USA is introducing a new upgrade for their Special Police Rifle (SPR) that allows it to use high-capacity magazines. We do not sell or share your information with anyone. The website listed (cdiprecisiongunworks.com) does not lead to CDI. Winchester Model 70 and FN Police SPR (LA) Stealth Detachable Mag Bottom Metal, The minimum purchase order quantity for the product is 1. In reading posts on various websites, PT&G's bottom metal seems to work for FN SPR's floor plate models without modification. 4 Round Detachable Box Magazine. This fits Winchester LA or FN Police Special LA. The simplicity of the Black Ripstop cap makes it perfect for every occasion. Retrofit on SPRs can be accomplished in minutes and requires few tools (torque wrench is required). You are using an out of date browser. List Price: . The first box magazine was patented by Read more . For more information go to www.p65Warnings.ca.gov. .308 Winchester/7.62mm NATO. I've sent several emails to both customer service and the technical dept., at FN USA. I plan to convert it to accept detachable magazine with a new bottom metal. Forged steel construction with flat bottom profile, Controlled round feed (CRF) with external claw extractor, One-piece steel MIL-STD-1913 optics rail with an additional 20 MOA elevation built in, Cold hammer-forged, chrome-lined, free-floating, Multiple steel sling swivel studs or sling mounting points, Model 70-type two-lever adjustable trigger, This Website uses tracking mechanisms as further described in our. $79.00, Special Price 2023 FN America, LLC. We use cookies to give you the best possible user experience & to analyze traffic. It is made to the same military-grade specifications as our M700 stealth kits. It is this type of detachable box magazine that we are going to direct our attention to now. FN's TBM system got excellent reviews, but it can only be dropped directly into SPR rifles with original DBM bottom metal rifles, not to the floor plate stocks. Note nose profile in second picture. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Capacity: 4-Round. Manufacturer part number: 62655-01. All Rights Reserved. The newer A5m's just come with the bottom metal already installed for the TBM. $699.99, Special Price We use cookies to help us deliver our services and collect customer data. The popular and affordable FN SPR A1 is chambered in308 Winchester with a 24 non-fluted, cold hammer-forged MIL-SPEC barrel with a chrome-lined bore, making it ideal for long-range target shooting and tactical competition. Get the latest updates on new products and upcoming sales. Yes that should drop right into your rifle (replaces the bottom metal). The release lever does not protrude too far below the trigger guard so it does not get in the way much at all. Proper inletting of the stock is needed to fit the DBM as the floorplate is not a direct drop in replacement for the factory floor metal on any of the rifles. Thread revival on my part, but I have feedback to offer. Milled from 7075-T6 billet aluminum, this design brings an interchanable detachable magazine system to the time-tested Winchester Model 70 rifle. By continuing to use our site, you accept our use of cookies. The TBM kit includes the bottom metal, action screws, one 5-round and one 10-round magazine. Does not require modification of or fitting to the rifle. Here's a couple of images I saved from CDI site when I was looking at having this done. Speer Ammunition Speer Gold Dot, 5.7X28MM, 40Gr, Gold Dot Hollow Point, 50 Round Box 25728GD The original Gold Dot line remains a benchmark for both self-defense and duty use" and it's earned the trust of law enforcement world-wide. For a quicker reload from pocket or pack, make sure you have extra factory magazines for your FN SPR rifles. Will not work with FNS or FNX series pistols. #1 Just FYI - If anyone needs a magazine for their FN SPR or PBR rifle I just ordered and received 5 mags from: http://www.trophyshuntinggear.com/ They are selling them for $38.79 each which is about $5-$10 cheaper than I could find them anywhere else. For those of you that did the bottom metal kit, what stock did you put it in? We hope you will explore these specific opportunities to help you enjoy an enhanced quality of life in Aliso Viejo. Fits All FN TSR XP, PBR, and FN SPR rifles with Detachable Box Magazines (DBM) chambered in 308 Win. Get exclusive offers and early access to our best deals! It is a drop in kit for the short action. Since JavaScript is disabled, you will not be able to properly navigate, add items to your cart, or place an order. CDI manufactures their floorplates from solid billet 6061-T651 Aluminum and they are Hardcoat Anodized and arrive ready to install. That rifle was a lever action that utilized a 7 round tubular magazine and saw use in the U.S. Civil War. Sign up to get notified when this product is back in stock. No biggie but means you're not simply going to be able to just remove material and drop the TBM in. Magazines have come a long way since Christopher Spencer designed the fist removable magazine fed rifle in 1860. Also now, AICS pattern mags and clones are cheap. FN 503 9mm Magazines $49.99 All rights reserved. The TBM kit includes the bottom metal, action screws, one 5-round and one 10-round magazine. Fits All FN TSR XP, PBR, and FN SPR rifles with Detachable Box Magazines (DBM) chambered in 308 Win. For more information go to www.p65Warnings.ca.gov. If there is a standard for the detachable box magazines used in modern bolt action rifles it is the Accuracy International CS or AICS magazine. By adapting your bolt action rifle to accept Accuracy International AICS magazines, you can quickly change the variety of ammunition in your gun for different target types. I did purchase 2 more 10 round mags and 2 5 round mags for $80 shipped from a member here, so I feel I'm way ahead vs. going with an AICS kit + install. $25.99. TSRs or PBRs with DBM equipment might require fitting by a gunsmith. PTG makes two bottom metal for the FN SPR. Constructed from durable stainless steel with flush-fitting polymer baseplate and a 4-round capacity, these factory magazines are engineered to FNs exacting quality standards to ensure perfect fit and function. ETS Smith & Wesson M&P 9mm 30-Round Extended Magazine, Bulgarian AK-47 7.62x39mm 30-Round Steel Magazine, ETS 9mm 40-Round Extended Magazine for Glock 18 Pistols, Lancer L5 AR-15 .223 / 5.56 10-Round Advanced Warfighter Magazine, ETS CZ Scorpion EVO 3 9mm 30-Round Magazine, Nosler Match Grade 22 Nosler Ammo 85gr RDF 20 Rounds, Allen Girls With Guns Lockable Compact Handgun Case, ProMag Taurus GX4, GX4XL 9mm 50-Round Drum Magazine, Vortex Venom 5-25x56mm FFP EBR-7C MRAD Rifle Scope, ProMag Smith & Wesson CSX 9mm 30-Round Drum Magazine, FN SPR / TSR XP .308 / 7.62x51mm 4-Round Steel Magazine. The Stealth Style Detachable Magazine Bottom Metal from PTG is the perfect upgrade to your tactical rifle. I did the conversion to mine. I sold the Hogue stock that I got and my bottom metal/3 mags for $160, so I'm only in to the bottom metal for $90. Federal Power-Shok Ammo 12 Gauge 3" Rifle ProMag FN Five-seveN 30 Round Polymer Mag HK VP9 Optics Plate #2 - Trijicon RMR / H ProMag FN Five-seveN 30 Round Polymer Magazine, Taran Tactical Firepower Base Pad +2 / +3 Glock 19 / 23 Red, Trijicon RMRcc Dovetail Mount M&P Shield EZ. We are a worldwide community of over 2000 engineers, chemists, marketers, manufacturers, researchers, and innovators who share the same ethos creating technologies that provide a meaningful improvement in patient lives. In 1997 MicroVention was founded and incorporated in a small facility in Southern California. AICS magazines were originally developed for the AI rifles and AI Chassis System (AICS) but are now utilized in detachable box magazine (DBM) floorplates from several different manufacturers and are available in either 5 round or 10 round configuration. adroll_adv_id="TV62MPEO65G43LPPV552TO";adroll_pix_id="TV2G7EZYH5DOHNGSXSDJJW",function(){var n=function(){if(document.readyState&&!/loaded|complete/.test(document.readyState)){setTimeout(n,10);return}if(!window.__adroll_loaded){__adroll_loaded=!0;setTimeout(n,50);return}var t=document.createElement("script"),i="https:"==document.location.protocol?"https://s.adroll.com":"http://a.adroll.com";t.setAttribute("async","true");t.type="text/javascript";t.src=i+"/j/roundtrip.js";((document.getElementsByTagName("head")||[null])[0]||document.getElementsByTagName("script")[0].parentNode).appendChild(t)};window.addEventListener?window.addEventListener("load",n,!1):window.attachEvent("onload",n)}(). I haven't purchased it yet but they did tell me it is indeed designed to work for an SPR A1 with the DBM. We make products to tighter tolerances than factory. Species: PTK Material: OD Green Rubber Electronic: OD Green, ATI SR-1 STAND READY AR BUTTSTOCK KIT W/ BUFFER TUBE AND CASTLE NUT, MAGPUL STOCK PRS LITE AR15 MIL-SPEC CARBINE ODG, MAGPUL STOCK PRS LITE AR15 MIL-SPEC CARBINE BLACK, ACE ACE Folding Stock Mechanism with Boss, Fits AK, Folds Left or Right, Black A500-KSpecifications, ACE ACE CAR15 Stock Block, Fits AR Rifles, For Using AR Stocks with Ace Stock System, Black A510Specifications. The Stealth Style Detachable Magazine Bottom Metal from PTG is the perfect upgrade to your tactical rifle. Can't find the standard hinged floor plate I thought I had but looking at a stock cut for floor plate - inletting for TBM will leave a pretty good gap in the area at rear of floor plate/front of the trigger that would have to be filled. WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. 12pm-6pm CST Mon A forum community dedicated to FN Herstal firearm owners and enthusiasts. All the 4 round detachable mags are the same for the SPR's as well (the DBM's and TBM's are not interchangeable though-which is what I suspect is why you were told they wouldn't work in the A1-because A1's aren't available from FN with the TBM bottom metal-it's a user-installed option for the A1's). FN USA has begun selling a Tactical Box Magazine (TBM) Conversion Kit for the FN SPR rifle. It is made of steel with a stainless steel finish and is made to FN USA's specifications and tolerances, using the same manufacturing and materials as the original equipment magazines, ensuring perfect fit and operation. FN Bolt Action Rifles / FNH SPR / TSR Detachable Box Magazine (DBM) 308, 4-Rnd FNH SPR / TSR Detachable Box Magazine (DBM) 308, 4-Rnd Code: 6261401 3 | Write a Review $49.35 Sold Out Description Specifications Important Information Reviews Product Description Descripton: FNH SPR / TSR Detachable Box Magazine (DBM) 308, 4-Rnd Popular Brands $71.00. Its matte black McMillan fiberglass stock has a close-radius upright grip, textured gripping surfaces, and three sling mounting points. Magazines have come a long way since Christopher Spencer designed the fist removable magazine fed rifle in 1860. Design details [ edit] The rifle is manufactured at the U.S. Overall we are very impressed with the CDI DBM floorplate and plan to use them on additional projects in the future. 9am-6pm CST Tue-Fri, 2023 Omaha Outdoors, LLC. The description seems to suggest it's for ALL SPR but at $450+ I want to make sure. All Rights Reserved. By law, shipping is NOT ALLOWED outside of the U.S.A. The TBM kit is an upgrade kit that allows owners of SPRs with the standard DBM magazine assembly (.308 only) to upgrade to the TBM magazine assembly with 5 and 10-round magazines (DBM is only 4-round capacity). The A1 has a detachable box magazine (DBM) and a one-piece steel MIL-STD-1913 optical rail with an additional 20 MOA of elevation built in. In reading posts on various websites, PT&G's bottom metal seems to work for FN SPR's floor plate models without modification. FMK AR-1 Extreme Strip LowerAR-15 Polymer Lower Reciever BlackThe AR1 eXtreme is a multi-caliber, MIL-SPEC AR15 lower receiver from FMK Firearms. As with many products the price of the aftermarket rifle floor plate with a detachable box magazine has dropped as it has become more widely available and one of the best values out there is the unit available from CDI Precision Gun Works.