.300 Blackout
.300 Blackout
Discover an extensive range of top-tier .300 Blackout AR 15 parts and accessories designed to elevate your shooting experience. Our collection offers exceptional quality and compatibility, from high-performance barrels and muzzle devices to precision triggers and handguards. Whether seeking enhanced accuracy, reduced recoil, or tactical versatility, our meticulously curated selection ensures you'll find the perfect components to optimize your .300 Blackout AR 15. Elevate your shooting performance and unlock the full potential of your firearm with our premium offerings.
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Nickel Boron M16 Bolt Carrier Group 5.56/.223/300 BLK
Black Rifle Depot
MSRP: $149.95$139.95Nickel Boron M16 Bolt Carrier Group 5.56/.223/300 BLK (BCG) The Nickel Boron M16 Bolt Carrier Group 5.56/.223/300 BLK (BCG) from Black Rifle Depot is a high-quality, precision-machined product with exceptional performance and easy...MSRP: $149.95$139.95 -
Out of stock
Toolcraft ION BOND - DLC .223/5.56/300BLK M16 Profile Bolt Carrier Group
Toolcraft, Inc.
MSRP: $149.95$139.95Toolcraft ION BOND - DLC .223/5.56/300BLK M16 Profile Bolt Carrier Group | BCG Toolcraft is known for high quality products. Their BCG's are second to none. Shop for Toolcraft products here at Black Rifle Depot and get the quality products you...MSRP: $149.95$139.95 -
Out of stock
Yankee Hill Machine AR 15 Dust Cover - .300 BLK
Yankee Hill Machine Co
MSRP: $15.95$13.95Yankee Hill Machine AR 15 Dust Cover - .300 BLK The Yankee Hill Machine Co. caliber marked dust covers are especially for those who may end up changing the caliber of their top end/upper receiver. Includes: Caliber Marked Dust Cover Rod and...MSRP: $15.95$13.95 -
Out of stock
Toolcraft Nickel Boron .223/5.56/300BLK M16 Profile Bolt Carrier Group
Toolcraft, Inc.
MSRP: $159.95$139.95Toolcraft Nickel Boron .223/5.56/300BLK M16 Profile Bolt Carrier Group Features: 5.56/.223/.300 Black Out Full Auto Capable Carpenter 158 MPI and HPT Tested Bolt Case Hardened 8620 Carrier 4130 Gas Key Grade 8 Hardware With Proper Staking Gas...MSRP: $159.95$139.95 -
Strike Industries Cookie Cutter Comp for .308/300BLK/7.62
Strike Industries
MSRP: $68.95$57.95Strike Industries Cookie Cutter Comp for .308/300BLK/7.62 This is the Strike Industries Cookie Cutter Comp muzzle brake and compensator for 7.62/300BLK/.308. As with most Strike Industries products, this muzzle device is unique looking and edgy...MSRP: $68.95$57.95 -
Strike Industries King Comp Compensator for 300BLK/.308/7.62
Strike Industries
MSRP: $49.95$44.95Strike Industries King Comp Compensator for 300BLK/.308/7.62 The Strike Industries King-Comp features a large dual chamber design, which was engineered to reduce felt recoil and help reduce the side concussion with the...MSRP: $49.95$44.95 -
Out of stock
Faxon Firearms Black Nitride 5.56/300 BLK M16 Bolt Carrier Group
Faxon Firearms
MSRP: $145.00$133.95Faxon Firearms Black Nitride 5.56/300 BLK M16 Bolt Carrier Group | BCG Faxon Bolt Carrier Groups are Mil-Spec with a "Superfinish" to increase the overall smoothness of operation, help reduce friction, and dramatically reduce fouling. They...MSRP: $145.00$133.95 -
Magpul PMAG M3 300 BLK 30RD - Black
Magpul Industries
MSRP: $15.95$15.15Magpul PMAG M3 300 BLK 30RD - Black The PMAG® 30 AR 300 B GEN M3™ is a purpose-designed magazine for rifles chambered in 300 Blackout®. Since its inception, 300 Blackout shooters have had to use a magazine designed for another...MSRP: $15.95$15.15 -
Out of stock
Diamondback Firearms 10.5" .300 AAC Blackout AR Barrel
Diamondback Firearms
MSRP: $88.00$86.95Diamondback Barrels 10.5" .300 AAC Blackout AR Barrel At Diamondback, they are able to produce barrels that meet the shooters requirements. Their barrel blanks are made from premium materials and machined using some of the finest equipment on the market...MSRP: $88.00$86.95 -
Out of stock
16" .300 Blackout Barrel
Black Rifle Depot
$139.9516" .300 Blackout Barrel This is a hard to come by barrel. It is also a must have for any serious custom AR builder and collector. Features: Chambered In .300 Blackout 1:10 Twist Black Nitride Treated 4150 CMV Barrel Steel Pistol Length...$139.95 -
Out of stock
Aero Precicion M4E1 Threaded Complete Upper 8" .300 Blackout Barrel 7" M-LOK ATLAS S-ONE Handguard - FDE Cerakote
Aero Precision
MSRP: $635.00$569.99Aero Precicion M4E1 Threaded Complete Upper 8" .300 Blackout Barrel 7" M-LOK ATLAS S-ONE Handguard - FDE Cerakote Aero Precision APAR700311M1: This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with...MSRP: $635.00$569.99 -
Out of stock
Sons of Liberty Gun Works EXO3 16" .300 BO Upper
Sons of Liberty Gun Works
MSRP: $750.00$749.95Sons of Liberty Gun Works EXO3 16" .300 BO Complete Upper Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use...MSRP: $750.00$749.95 -
Out of stock
Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper
Maxim Defense Industries
MSRP: $1,295.95$1,165.50Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper The NEW Maxim Defense PDX(TM) U.R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower receiver. With the PDX(TM) U.R.G, you dominate...MSRP: $1,295.95$1,165.50 -
Out of stock
ODIN Works Black Nitride Bolt Carrier Group 223REM/556NATO/300BLK
Odin Works
$129.00ODIN Works Black Nitride Bolt Carrier Group 223REM/556NATO/300BLK As an essential part of any rifle, the ODIN Works .223 Black Nitrided, Type 2 bolt face is Mil-Spec and comes with a Case Hardened 8620 Steel Black Nitride Finish. This advanced low...$129.00 -
Out of stock
CMMG 16.1" 300 AAC Blackout AR 15 Barrel - Stainless
CMMG
$204.95CMMG 16.1" 300 AAC Blackout AR 15 Barrel - Stainless The CMMG 16.1" 300 AAC Blackout AR 15 Barrel is perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced...$204.95 -
Out of stock
Radical Firearms 8.5" 300 Black Out Complete Upper Assembly
Radical Firearms
MSRP: $474.95$449.95Radical Firearms 8.5" 300 Black Out Complete Upper Assembly The Radical Firearms 8.5" HBAR profile 300BLK is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that...MSRP: $474.95$449.95 -
Out of stock
VG6 Gamma 300BLK
VG6 Precision
MSRP: $90.00$80.99VG6 Gamma 300BLK Experience the ultimate recoil reduction with the VG6 Gamma 300BLK muzzle brake. Designed with cutting-edge engineering techniques, including CFD and CAE, this high-performance brake delivers unrivaled results. Its hybrid design...MSRP: $90.00$80.99 -
16" 300BLK 1:8 Parkerized Pistol Heavy Barrel
Black Rifle Depot
MSRP: $99.99$79.9516" 300BLK 1:8 Parkerized Pistol Heavy Barrel We collaborate with leading machine shops and barrel manufacturers at Black Rifle Depot to offer exceptional barrels under the BRD brand. By sourcing from top-tier American manufacturers and purchasing in...MSRP: $99.99$79.95 -
Out of stock
Aero Precision 8" .300 BLK Complete Upper w/ No Forward Assist & M-LOK ATLAS R-ONE Handguard - Black
Aero Precision
MSRP: $434.99$374.95Aero Precision 8" .300 BLK Complete Upper w/ No Forward Assist & M-LOK ATLAS R-ONE Handguard - Black This AR-15 Complete Upper Receiver, paired with the ATLAS R-ONE handguard streamlines the appearance of your next AR-15 build by removing the Forward...MSRP: $434.99$374.95 -
Out of stock
Aero Precision AR15 Complete Upper w/ No Forward Assist, 8" .300 Blackout Barrel, 7" M-LOK ATLAS S-ONE Handguard - Anodized Black
Aero Precision
MSRP: $434.99$426.95Aero Precision AR15 Complete Upper w/ No Forward Assist, 8" .300 Blackout Barrel, 7" M-LOK ATLAS S-ONE Handguard - Anodized Black This AR15 Complete Upper Receiver, paired with the ATLAS S-ONE handguard streamlines the appearance of your next AR15 build...MSRP: $434.99$426.95 -
Out of stock
Aero Precision M4E1 Complete Upper 8" .300 Blackout Barrel EM-7 Gen 2 Handguard - Anodized Black
Aero Precision
MSRP: $595.00$516.95Aero Precision M4E1 Complete Upper 8" .300 Blackout Barrel EM-7 Gen 2 Handguard - Anodized Black This Complete Upper includes our Gen 2 Enhanced Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design...MSRP: $595.00$516.95 -
Out of stock
Aero Precision M4E1 Threaded Complete Upper 10" .300 Blackout Barrel ATLAS R-ONE 9" M-LOK HG - FDE Cerakote
Aero Precision
MSRP: $655.00$569.95Aero Precision M4E1 Threaded Complete Upper 10" .300 Blackout Barrel ATLAS R-ONE 9" M-LOK HG - FDE Cerakote This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while...MSRP: $655.00$569.95 -
Out of stock
Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 12" M-LOK ATLAS S-ONE HG - Anodized Black
Aero Precision
MSRP: $550.00$480.95Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 12" M-LOK ATLAS S-ONE HG - Anodized Black This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the...MSRP: $550.00$480.95 -
Out of stock
Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 15" M-LOK ATLAS S-ONE HG - Anodized Black
Aero Precision
MSRP: $660.00$573.95Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 15" M-LOK ATLAS S-ONE HG - Anodized Black This AERO Precision Complete Upper is equipped with the new ATLAS S-ONE Handguard, part of our S-ONE line that emphasizes size reduction and weight...MSRP: $660.00$573.95 -
Out of stock
Aero Precision M4E1-T Complete Upper, 8" .300 Blackout Barrel, 7" M-LOK ATLAS S-ONE HG, Anodized Black
Aero Precision
MSRP: $595.00$516.95Aero Precision M4E1-T Complete Upper, 8" .300 Blackout Barrel, 7" M-LOK ATLAS S-ONE HG, Anodized Black This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the...MSRP: $595.00$516.95 -
Out of stock
CMMG 16.1" 300 AAC Blackout AR 15 Barrel
CMMG
$199.95CMMG 16.1" 300 AAC Blackout AR 15 Barrel The CMMG 16.1" 300 AAC Blackout AR 15 Barrel is perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced...$199.95 -
Out of stockOn Sale
CMMG 8" 300 AAC Blackout AR 15 Barrel
CMMG
Now: $169.95Was: $174.95CMMG 8" 300 AAC Blackout AR 15 Barrel Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. ALL NFA RULES APPLY Features: 8.0" Medium Taper...Now: $169.95Was: $174.95 -
Out of stock
Fortis 300BLK Out Muzzle Brake - Black
Fortis Manufacturing
$94.95Fortis 300BLK Out Muzzle Brake - Black Our new Fortis Muzzle Brake was inspired by the sharp lines of our brand. Like many of our products, the machining on this brake takes a lot longer than the competition. We take our time to create the very best...$94.95 -
Magpul Industries PMAG M3 300BLK 20Rd - Black
Magpul Industries
MSRP: $15.95$15.15Magpul Industries PMAG M3 300BLK 20Rd - Black Magpul's PMAG 20 AR 300 B GEN M3 is a purpose-built magazine for rifles chambered in .300 Blackout (300 BLK). Similar in every way to our PMAG 30 AR 300 B, the PMAG 20 is more compact for increased...MSRP: $15.95$15.15 -
Out of stock
Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper - FDE
Maxim Defense Industries
MSRP: $1,295.00$1,284.95Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper - FDE The NEW Maxim Defense PDX(TM) U.R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower receiver. With the PDX(TM) U.R.G, you...MSRP: $1,295.00$1,284.95 -
Out of stock
Radical Firearms 10.5" 300 Black Out Complete Upper Assembly
Radical Firearms
MSRP: $474.95$449.95Radical Firearms 10.5" 300 Black Out Complete Upper Assembly The Radical Firearms 10.5" HBAR profile 300BLK is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that...MSRP: $474.95$449.95 -
Out of stock
Radical Firearms 16" 300 Blackout Complete Upper Assembly
Radical Firearms
MSRP: $474.95$469.95Radical Firearms 16" 300 Black Out Complete Upper Assembly The Radical Firearms 16" 300 Blackout Complete Upper Assembly is a comprehensive solution that effortlessly fits any MIL-STD lower receiver. Whether you're a novice shooter embarking on your...MSRP: $474.95$469.95 -
Out of stock
Sons of Liberty Gun Works 16" M4-89 Upper
Sons of Liberty Gun Works
MSRP: $900.00$889.95Sons of Liberty Gun Works 16" M4-89 Upper 300 Blackout Elevate your firearm experience with the Sons of Liberty Gun Works M4-89 Complete Upper. Constructed with an unwavering commitment to excellence, SOLGW upholds quality, durability, and combat...MSRP: $900.00$889.95