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  1. Color
    Black
  2. Platform
    AR-15
  3. Caliber
    300 AAC Blackout
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Options
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  2. W/O BCG & CH 1 item
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  11. 12.5" 1 item
  12. 14.5" 1 item
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  14. 16.1" 4 items
Material
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Inventory
  1. In Stock 9 items
  2. Out of Stock 5 items
Customer Rating
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  2. 3
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Gun Parts

Whether you’re looking for a quality trigger upgrade for your Glock® pistol or AR-style carbine, an ergonomic pistol grip for your sporting rifle, drop-in magwell upgrade, or an ergonomic pistol brace, we at GunMag Warehouse offer a wide selection of gun parts and upgrades from top-selling brands like SB Tactical®, Magpul®, Tyrant Designs®, Sig Sauer®, and more. Shop our full collection of gun parts today!

  1. Faxon Firearms Match Series AR-15 Pistol-Length Gas .300 Blackout SS Barrel-9"-1:8
    Faxon Firearms Match Series AR-15 Pistol-Length Gas .300 Blackout SS Barrel
    $188.99 $197.99 $173.99 $182.99 Save $15.00
  2. Faxon Firearms Duty Series AR-15 .300 Blackout 1:8 4150 CMV Barrel-10.5"-Pistol
    Faxon Firearms Duty Series AR-15 .300 Blackout 1:8 4150 CMV Barrel
    $160.99 $173.99 $148.99 $160.99 Save $13.00
  3. Ballistic Advantage Modern AR-15 16" Pistol-Length Gas .300 BLK 1:7 CMV Barrel
    Ballistic Advantage Modern Series AR-15 Pistol-Length Gas .300 BLK 1:7 CMV Barrel
    $155.99 $180.99 $147.99 $171.99 Save $9.00
  4. TacFire AR-15 .300 Blackout Upper Receiver - 10"
    TacFire AR-15 .300 Blackout Upper Receiver
    (2)
    $309.99 $399.99 $254.99 $299.99 Save $145.00
  5. TacFire AR-15 300 Blackout Unassembled Pistol Kit w/ Lower Parts Kit - 10.5"
    TacFire AR-15 300 Blackout Unassembled Pistol Kit w/ Lower Parts Kit
    (1)
    $359.99 $499.99 $309.99 $329.99 Save $170.00
  7. TacFire AR-15 5" Micro-Length Gas .300 Blackout 1:7 Nitride Barrel
    TacFire AR-15 .300 Blackout Stainless Steel Barrel
    $101.99 $109.99 $79.99 $104.99 Save $30.00
  9. Ballistic Advantage Performance AR-15 8.3" Pistol-Length Gas .300 Blackout 1:7 CMV Barrel w/ Lo Pro Gas Block
    Ballistic Advantage Performance AR-15 .300 Blackout CMV Barrel w/ Lo Pro Gas Block
    Out of stock
    $209.99 $210.99 $199.99 $209.99 Save $11.00
  11. Odin Works AR-15 10.5 Pistol-Length Gas .300 Blackout 1:8 Stainless Steel Barrel w/ Tunable Gas Block
    Odin Works AR-15 .300 Blackout 1:8 Stainless Steel Barrel w/ Tunable Gas Block
    Out of stock
    $245.99 $325.99 $232.99 $308.99 Save $17.00
  13. CMMG AR-15 12.5" Pistol-Length Gas .300 Blackout 1:7 CM Barrel
    CMMG AR-15 .300 Blackout 1:7 CM Barrel
    $199.99 $224.99 $164.99 $179.99 Save $45.00
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