The Radical Firearms 300 AAC Blackout Upper Assembly is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! These AR15 Upper Receivers from the innovators at Radical Firearms feature a forward assist for increased accuracy and a faster cool down time. With an ejection port door the Radical Firearms 16 in. Blackout Upper Assembly easily ...The Spike's Tactical 16" 300 Blackout Complete Upper offers the same level of quality and performance found in all their rifles. 300 BLK 16" chrome-lined, cold hammer-forged barrel with phosphate coating. 5/8×24 thread pitch with 1:7 twist rate. Carbine length gas system. 7075-T6 forged aluminum upper receiver.Includes: M4E1 Enhanced Assembled Upper Receiver. Enhanced Handguard of choice. 16" .300 Blackout CMV Barrel. Low Profile Gas Block and Pistol Length Gas Tube. Product comes assembled. This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab.#1 Spikes Tactical 300 Black Out 8.3in Forged Upper. View on OpticsPlanet. #2 Radical Firearms 16in 300 Blackout RF Upper. View on OpticsPlanet. #3 Aero Precision M4E1 Enhanced 16in .300 Blackout …Option B. This silencer is also offered in an option B configuration, in which you, the customer, sends in your upper receiver, rail and gas block and we build you a custom Leonidas Gen 2 300 Blackout integral rifle silencer with those parts. Leonidas Gen 2 option B MSRP: $ 1,740. The parts from Liberty that are included with this are as follows:This is an exclusive AR-15 upper made from Brownells. This 300 Blackout upper receiver contains a 16-inch 1:8 twist barrel. The A3 13-slot aluminum flat top receiver is standard and includes a 10” handguard, utilizing the KeyMod rail system. It has a phosphate finish to withstand corrosion and dirt.Details. This BCA AR-15 complete 300 Blackout pistol length upper has a 10.5" heavy barrel with a parkerized finish, and features a 1:8 twist rate, with a pistol length gas system. It includes a 9.5" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected).300BLK Uppers. 300Blk uppers for AR15 in a wide range of Cerakote colors like FDE and OD Green are available from Always Armed. 300 BLK AR uppers are the top choice for your next hunting AR15. Using the standard 5.56 bolt carrier group, the .300 Blackout uppers are the go to pick when AR builders are looking for a new caliber in their AR-15 as ...Ducky One 2 Mini V2: The Ducky One 2 Mini V2 is a very good upper mid-range 60% keyboard with a comfortable typing experience. However, its latency is much higher than that of other keyboards on this list, making it best suited for typists or more casual gamers looking for a smaller board. See our review.8.5" 300 blackout ar-15 barreled upper - mas defense squadron 9.87" lightweight quad rail - fde msrp: $425.00. our price: $369.99 . sale price: $319.99 . in stock (12) 10.5" 300 blackout ar-15 barreled upper - mas defense mil spec barrel nut msrp: $324.00. our price: $299.99The Uppers & Parts collection features a variety of components to complete your .300 Blackout build. From upper receivers to handguards, barrel assemblies, and more, you'll find everything you need to customize your firearm. Our products are designed to meet the highest standards of quality and compatibility, ensuring a seamless fit and ...Davidson Defense 'Concussive Whisper .300 Blackout' 7.5-inch AR-15 .300BLK Nitride Pistol Complete Upper Build Kit $399.99 Original price $244.99 DD 'Buck Wild .300 Blackout' 7.5-inch AR-15 .300BLK Nitride Pistol Upper Build KitDec 29, 2013 ... Please rate the video!! In part 1 of this episode, I fully assemble an upper receiver group chambered in 300 AAC Blackout.Radical Firearms integrally suppressed uppers are designed for simple rifle enthusiasts. Offering 5.56 NATO and 300 Blackout options, the Radical uppers offer a free-floating m-lock hybrid rail with a M4 military standard …It includes a 15" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 300 Blackout upper is compatible with any mil-spec AR-15 lower. Shop more .300 Blackout Uppers! Magazine not included. Check out Magazines here!The Best 300 Blackout Upper. Posted by on 12/5/2023 to News. Finding the Best 300 Blackout Upper at Gorilla Machining. When it comes to optimizing your AR-15 rifle for versatility and performance, upgrading to a 300 Blackout upper can be a game-changer. The 300 Blackout cartridge is designed to deliver enhanced stopping power and compatibility ...14.5" M4 Carbine Upper Group; 12.5" Carbine Upper Group; 11.5" Carbine Upper Group; 7", 9" Pistol Upper Group; BCM® 300 BLACKOUT Upper Receiver Groups; BCM® Upper Groups with KMR™ (KeyMod™) Handguards; BCM® Upper Groups with (M-LOK®) MCMR Handguards; BCM® Upper Groups with QRF™ (Quad Rail Forend) BCM® Upper Groups with RAIDER HandguardsAlways Armed 7.5" 300 Blackout Upper Receiver - Magpul FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black Nitride... Quick view. ALWAYS ARMED JESTER 16" .300 BLACKOUT UPPER RECEIVER - FDE $319.00. ALWAYS ARMED JESTER 16" .300 BLACKOUT UPPER RECEIVER - FDE Made in the USA ...Aug 10, 2021 · But the largest and most visibly distinct difference is the bolt face for 7.62x39 and .300 Blackout. Because 300 BLK was designed to use the same bolt as 5.56 NATO, it’s stronger. A lot stronger. 7.62x39 requires a much larger bolt face and this makes for a thin-walled bolt that can and will break easier.The CMMG Banshee 300 Blackout MK4 Upper comes in multiple configurations. However, this pistol version comes with a short 8-inch barrel. This works great with the .300 blackout caliber, as it was designed to be fired from a short barrel and can reach its maximum burning potential in a 9-inch barrel. The barrel on this upper is made from Salt ...Based on feedback from shooting experts, the best barrel length for .300 Blackout suppressed is 8 to 10 inches. If your barrel is 8 to 10 inches, attaching a 6-inch suppressor will take the barrel’s length to 14 to 16-inches. At 16 inches, .300 Blackout barrel muzzle velocity is close to its peak, giving you a powerful weapon for making ...637N-UA300PHB1618P-15M3. Qty. $197.99 $219.99. Add to Cart. Add to Wish List Add to Compare. Details. This BCA AR-15 complete 300 Blackout rifle length upper has a 16" heavy barrel with a parkerized finish, and features a 1:8 twist rate, with a pistol length gas system. It includes a 15" MLOK rail, an M4 flat-top forged upper receiver, a BCA ...The Spike’s Tactical 16" 300 Blackout Complete Upper offers the same level of quality and performance found in all their rifles. 300 BLK 16" chrome-lined, cold hammer-forged barrel with phosphate coating. 5/8×24 thread pitch with 1:7 twist rate. Carbine length gas system. 7075-T6 forged aluminum upper receiver.The 300 Blackout AR15 uses the same 5.56 BCG. No extractor difference either. If you already possess a 5.56 NATO platform and want to shoot the 300 Blackout, you can simply acquire a 300 Blackout barrel without the need for separate bolt carrier groups or charging handles. This makes converting a 5.56 AR15 to 300 Blackout rifle super simple and ...A guide to the best .300 Blackout upper receivers for AR-15 platforms, with pros and cons, prices, and comparisons. Learn why the .300 BLK is a great round for suppressors, home defense, and hunting.IC DI Upper 10.5' (300 BLK) Your Price: $1,203.00. IC DI Upper 10"|300 BLK | BLACK. Availability: Uppers are built to order. Due to current market conditions, please anticipate a 2-6 week lead time. Free Shipping. Choose Options. Color. Black . Barrel Length. 10.5 . Quantity +-Add to CartWhat Are The Best 300 Blackout Pistol Options: Sig MCX Rattler. Wilson Combat Protector. Springfield Saint Victor Pistol. Ruger AR-556 Pistol. Palmetto State Armory 7.5 SBA3. Ah, the AR-pistol. Is there anything sweeter than these mighty mites? Fun as all get out to rattle off the range.A reliable home generator helps ensure you have stable power and comfort during blackouts that can last for hours or days. That’s why it’s important to choose the right unit for yo...What Are The Best 300 Blackout Pistol Options: Sig MCX Rattler. Wilson Combat Protector. Springfield Saint Victor Pistol. Ruger AR-556 Pistol. Palmetto State Armory 7.5 SBA3. Ah, the AR-pistol. Is there anything sweeter than these mighty mites? Fun as all get out to rattle off the range.The CMMG Banshee 300 Blackout MK4 Upper comes in multiple configurations. However, this pistol version comes with a short 8-inch barrel. This works great with the .300 blackout caliber, as it was designed to be fired from a short barrel and can reach its maximum burning potential in a 9-inch barrel. The barrel on this upper is made from Salt ...Maxim Defense MDX 510 300BLK Mil-Spec Complete Upper - 10.3" Urban Grey. $1,255.50. Add to Cart. Add to Wish List Add to Compare. Rainier Arms RUC 5.56 NATO DI Complete Upper - 16". 5.0 star rating. 2 Reviews. Special Price $664.00 Regular Price $830.00.9119N-UA300CHB1618SS-15M3. Qty. $204.18 $226.87. Add to Cart. Add to Wish List Add to Compare. Details. This BCA AR-15 complete 300 Blackout rifle length upper has a 16" heavy barrel with a 416R stainless steel finish, and features a 1:8 twist rate, with a carbine length gas system. It includes a 15" MLOK rail, an M4 flat-top forged upper ...Manufactured on the M&P15 modern sporting rifle platform Chambered in .300 Whisper Will also safely fire .300 AAC Blackout Very effective short range round (approx. 200 yards) for hunting deer-sized game Tactical application for the cartridge is for short-range target shooting Cartridge has a very low recoil and muzzle blast Designed to operate with or without sound suppressor Barrel threaded ...DetailsThe Sons Of Liberty Gun Works M4-89 13.9" 300 Blackout AR-15 Upper is a compact and versatile upper receiver designed for reliability and exceptional performance. Featuring a 13.9-inch barrel with a pistol length gas system, this upper provides a balance of maneuverability and effective range. It features a Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT barrel, ensuring durability and ....300 Blackout Upper Receivers 7.62x39 Upper Receivers 350 Legend Upper Receivers ... With a traditional MILSPEC base of design, we use only the best materials combined with detail-oriented manufacturing. This allows us to deliver an exceptionally high-quality product with a Lifetime Warranty while helping you to serve your community at a ...Feb 5, 2021 · 410 at Aero Precision. Get It. 2. Palmetto State Armory 10.5” Complete Upper Receiver Kit. PSA is known for their awesome, budget-minded rifles and parts, and this 10.5” .300 BLK upper kit is yet another excellent offering aimed at meeting the needs of the more budget-conscious consumer.In 2010, the .300 AAC Blackout cartridge was developed by the Advanced Armament Corporation in collaboration with Remington Defense. The primary goal was to offer a .30 caliber cartridge that outperformed the 5.56mm ammunition. The .300 BLK is essentially a 7.62 bullet in a cut-down 5.56 case, allowing for effective short-range ballistics.Get ratings and reviews for the top 7 home warranty companies in Upper Merion, PA. Helping you find the best home warranty companies for the job. Expert Advice On Improving Your Ho...Feature: 28.31. Description. IC DI MLOK® 10.5" UPPER RECEIVER. The LWRCI™ DI | Direct Impingement MLOK® Upper Receiver is made with the same craftsmanship and design excellence that comes with every LWRCI™ firearm. Built from the ground up to be more than just another direct impingement rifle, the LWRCI™ Di delivers the quality every ...Build up the .30 caliber AR-15 you've always wanted with our huge selection of .300 Blackout AR-15 parts! Orders over $50 ship free! New AT3 AT-15 Lower Receivers ... Complete Uppers - .300 Blackout (4) Charging Handles - 300 ... AT3 Tactical is bringing you the best with this Top-Tier Black Nitride Bolt Carrier Group Getting a high quality ...Upper P2 300BLK 16″ AARS $ 1,014.99. SKU: FGAA-01364 Categories: Adams Arms P2, ... As 300 Blackout is not a mil-spec cartridge, some tuning may be necessary depending on grain weight and suppressor used. Contact [email protected] for any questions. Specification. Upper Receiver.Get the best gun and ammo DEALS that are out there right now! Enter your email below and we will send them straight to your inbox! Gun Made may receive a small commission from any sales that link to products or services on this site. This does not affect the price you pay and your purchases through our links help support our work in continuing ...AM-15 .300 BLK M (No BCG -or- CH) This AM-15 Upper operates on a pistol-length gas system with an Anderson Steel Low-Profile Gas Block at the head. This upper is outfitted with an Anderson 16'' Barrel, chambered in .300 BLK, with a 1:8 twist. The Anderson Barrel is sheathed by an Anderson 9.5'' MLOK Handguard which opens options for front end ...Sep 20, 2022 ... Palmetto State Armory 10.5 300 Blackout review Build list: Anderson lower receiver CMMG lower parts kit Areo precision pistol buffer kit ...Some of the best .300 Blackout uppers are for pistols or registered short barrel rifles (SBR). This offering also from Radical Firearms bundles some of the most popular pistol …The DDM4ISR Upper Receiver Group is optimized for the .300 Blackout cartridge. Built around a 9 inch, Cold Hammer Forged barrel that is fluted along with a target crown and a standard pistol length gas system, this versatile, high-performance URG accurately delivers both subsonic and supersonic projectiles downrange with unrelenting reliability. Because the suppressor is an integral part of ...The Aero Precision M4E1 Enhanced 8in 300 Blackout Quantum Handguard Complete Upper Receiver is a top-of-the-line product that is perfect for anyone looking for the best possible performance out of their AR-15. This complete upper receiver includes the Quantum Handguard, which offers several key features that make it a step above the …The Best 300BLK Suppressors Available Criteria: For me, picking a 300BLK suppressor primarily focuses on noise reduction. Sure, many Blackout shooters will use supersonic loads for hunting and defensive situations. But for the most part, everyone wants solid subsonic performance. Obviously there are other important criteria for 300 Blackout ...It includes a 6.5" MLOK rail, an M4 flat-top 7075 billet aluminum upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 300 Blackout upper is compatible with any mil-spec AR-15 lower. Shop more .300 Blackout Uppers! Magazine not included. Check out Magazines here!Dec 28, 2017 ... ... Best AR 15 for the money, the best AR 15 Upgrades, best carry guns, or best Glock upgrades under 100. My Favorite YouTube Channels to Watch ...PSA 16" Pistol-Length 300AAC Blackout 1/8 Nitride13.5" Hex M-LOK Upper - With BCG, CH, & MBUS Sight Set Regular Price $559.99 Special Price $399.99 Add to CartIMHO, RR is about average all things considered. Those suggested by others above are of higher quality. But with the 300 BO, one really needs to consider the window it operates in. 240 SMKs at 1000 fps are going to require a different set of operational parameters than 110s at 2400 fps.Oct 31, 2013 · 16″ AAC 300 Blackout Upper. DPMS lower receiver. Magpul MOE adjustable stock on the buffer tube. Primary Arms MD-02 Red Dot (Aimpoint knock-off) Magpul MOE rubber grip. BAD-ASS Safety. Streamlight TLR-1. The rifle ran fine, but the configuration didn’t make sense given the actual performance profile of the caliber.Description. The foundation of this all new complete 300 Blackout upper from ODIN Works is a forged or Billet upper receiver bearing the ODIN name. On the upper is an ODIN dust cover and also new from ODIN is the XCH, eXtended Charging Handle, making charging the gun a much easier task. Inside the upper is a bolt carrier group made from case ...If you're in the market for a compact and reliable upper receiver for your pistol caliber carbine, the Foxtrot Mike FM-15 Upper is a solid choice. It excels in its intended role, offering maneuverability and customization options for PCC enthusiasts. 7. Aero Precision 20-inch Rifle Upper.At A Glance: Our Top 5 Picks For .300 Blackout Rifles in 2024. Editor's Choice: Ruger AR-556 .300 Blackout. Most Comfortable: Wilson Combat AR-15 Ranger. Best Quality: Savage Arms 110 Carbon Predator. Best for Hunters: Ruger American Ranch Rifle. Most Affordable: Palmetto State Armory PSA 15 in 300 blackout.8.5" 300 blackout ar-15 barreled upper - mas defense squadron 9.87" lightweight quad rail - fde msrp: $425.00. our price: $369.99 . sale price: $319.99 . in stock (12) 10.5" 300 blackout ar-15 barreled upper - mas defense mil spec barrel nut msrp: $324.00. our price: $299.99Here is load confirmation @ 100yd with the 125TMK 18.6gr supers load. 7x5 agg 0.521" 90% of the barrels out there cant do that with an AR15, let along a 10.5" 300Blk AR... I shoot this load out to 500M and its 10/10 every time with 1.5-5x MR/T CM-R2 optic.. Here is a 220SMK CFE Black subs load I worked up at 50yd.What Are The Best 300 Blackout Pistol Options: Sig MCX Rattler. Wilson Combat Protector. Springfield Saint Victor Pistol. Ruger AR-556 Pistol. Palmetto State Armory 7.5 SBA3. Ah, the AR-pistol. Is there anything sweeter than these mighty mites? Fun as all get out to rattle off the range.Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring machined T marks, and a mil-spec finish. These uppers are made for us right here in the USA by a mil-spec manufacturer. Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked ...A .300 Blackout receiver is secured to the upper receiver by 2 pins. The split design of having 2 receivers is to allow the upper part to have more customization abilities, i.e. mounting a scope and etc. ... In looking for the best .300 Blackout lower receivers, the keyword that you would want to keep an eye out would be the term ‘drop-in’. ...Sons of Liberty Gun Works .300 AAC Blackout Upper with 16" Barrel, Black - M489UPPER16300. Regular Price $900.00 Special Price $855.00. Details; SKU: 516551637981: Model Number: M489UPPER16300: Brand: Sons of Liberty Gun Works: UPC: 785939519136: Caliber.300 AAC Blackout: Qty. Add to Cart. Add to Wish List Add to Compare. Share: EmailAero Precision M4E1 Enhanced 16" .300 Blackout Complete Upper Receiver with 15" Enhanced M-LOK Handguard - Cerakote FDE - APAR640252M14. 2 Reviews. $429 99 $629.99. In Stock. Only 3 Left!Daniel Defense M4ISR. The Daniel Defense DDM4ISR is a premium rifle designed for the 300 Blackout cartridge, boasting an integrally suppressed build on the AR-15 platform. The rifle features a 9-inch cold hammer-forged barrel with an integrated suppressor, extending the overall barrel length to 16 inches.The supersonic BDC goes out to 600 yards, and the subsonic goes all the way out to 225 yards. Both are within the realm of possibility of the 300 Blackout round. This optic gives you a more affordable optic in the ACOG's realm of rule. For the money, this easily qualifies as the best scope for .300 Blackouts around. Why You Need a 300 BLK Scope.Made by Bravo Company MFG. These Barreled Upper Receiver Groups are designed for shooting professionals with the Mil-Spec features for the demands of their duty. They are full assembled, headspace, and test fired. Caliber: 300 Blackout; Barrel Length: 9" Barrel Material: 11595E Spec Steel; Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)Aero Precision M4E1 Enhanced 10" .300 Blackout Pistol Length Complete Upper Receiver with 9.3" Enhanced Handguard, Adjustable Gas Block, BREACH Charging Handle, & PRO Series BCG - Anodized Black - APSL100392. ... Our best sales and surplus - direct to your inbox! Be the first to know about contests, surplus items, and new releases!Nov 11, 2023 ... ... AAC 9" 300BLK upper with 1/9" twist barrel - Complete Griffin MK2 AR15 lower - Griffin Dual Lo 7 Suppressor - Zero Gravity 1.5" single piece&nbs...16″ AAC 300 Blackout Upper. DPMS lower receiver. Magpul MOE adjustable stock on the buffer tube. Primary Arms MD-02 Red Dot (Aimpoint knock-off) Magpul MOE rubber grip. BAD-ASS Safety. Streamlight TLR-1. The rifle ran fine, but the configuration didn't make sense given the actual performance profile of the caliber.It's one of the best .30 cal suppressors on the market, and if you're looking to get a subsonic .300 BLK to be as close to silent as possible, this is the suppressor we recommend. 11. Gemtech Integra Upper. This isn't actually a muzzle device, but it is another option if you're looking to go the suppressor route.The FoldAR line includes rifles and AR pistols, as well as separate uppers and a variety of calibers. Rifle options include 16 and 14.5-inch barrels, and calibers include .223 Wylde, .300 Blackout, .224 Valkyrie, 6.5 Grendel, and 6.8 SPC. FoldAR. The pistol variants are limited to 9-inch barrels and come in .223 Wylde, .300 Blackout, and 6.8 SPC.Shop AR Complete Uppers for AR-15, 308, AR-10, and 300 Blackout. We carry brands like Daniel Defense, FN, and Knights Armament. We use cookies to give you the best possible experience.Noveske Rifleworks Gen 4 N4 Diplomat Stainless 300 Blackout Complete Upper Receiver - 8". View Details. $1,353.75. Out of Stock. Sons of Liberty Gun Works East India Starter Kit Combat Grade 300BLK Barreled Upper Receiver - 9". View Details. Add to cart for sale price $376.99 $475.00. Out of Stock. Sons Of Liberty Gun Works M4-89 300 Blackout ...Jul 17, 2022 · The heavier grain.300 AAC Blackout provides higher ballistic performance and stopping power than the more common 5.56 subsonic AR configurations. Because the case dimensions of the 5.56 and.300 AAC Blackout are almost identical, most rifles with standard 5.56 components may be used to chamber the.300 Blackout cartridge.One of the most common causes of thigh pain is muscle strain, according to WebMD. Less common causes include vascular disease, blood clots and arthritis. Some causes of upper thigh...AR-15 Piston Conversion Kits. 1. Adams Arms P-Series Micro Block Piston Kit. Now, if you don't want to buy a whole new upper, there are also a number of gas conversion kits out there that will take your DI gun and convert it to a piston system. I've tried several, and I hated all of them except Adams Arms.What is upper middle class income? What other education, home ownership and behavioral characteristics define it? Reddit users have ideas. By clicking "TRY IT", I agree to receive ...Barrel: 10.5" 4150V Chrome Moly vanadium steel barrel phosphate coated and chambered in 300AAC Blackout with a 1 in 8" twist. Pistol-length gas barrel is finished off with a PSA 12" Slant End M-lok Rail, a low profile gas block and a Palmetto State State Armory Fluted Flash Can. Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard ...This is an exclusive AR-15 upper made from Brownells. This 300 Blackout upper receiver contains a 16-inch 1:8 twist barrel. The A3 13-slot aluminum flat top receiver is standard and includes a 10" handguard, utilizing the KeyMod rail system. It has a phosphate finish to withstand corrosion and dirt.Aero Precision M4E1 16" 300 Blackout Enhanced Com, Check Best Price. The easiest way to convert an existing AR15 into a 300 Blackout AR15 is to swap the entire upper rece, A guide to the best .300 Blackout upper receivers for AR-15, Check Price. The PSA AR-15 Lower Receiver Safe/Fire gets a lot of praise for being a quality fram, Shop Radical Firearms 8.5 in. 300 AAC Blackout Upper Assem, Some of the best .300 Blackout uppers are for pistols or reg, Pro2a Tactical's unique line of 300 Blackout AR-15 NR Side Chargin, The Top 6 Best 300 Blackout Upper 7.5. AR-15 300BLK 10" , Nov 29, 2023 · A versatile and well-liked cartridge, Aero Precision/Wilson Combat 300 HAM'R 18" Fluted Upp, Here are the 6 Best 300 Blackout AR uppers you can buy for full 16&q, Burnt Bronze Cerakote Finished. Chambered in .300 Bl, IMHO, RR is about average all things considered. Those sugges, Option B. This silencer is also offered in an option B confi, The Radical Firearms 300 AAC Blackout Upper Assembly , Settle your horses. The insinuation isn’t the 300 Blackout is a th, What Are The Top 300 Blackout Upper Options: Palmentto State , Caliber: 300 Blackout - WC-15 platform; Barrel length: 16" roun.