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    5/8x24
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  2. Out of Stock 24 items
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    & up     3 items
  3. 3
    & up     5 items
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    & up     6 items

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!

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  1. TacFire AR-15 Blowback .45 ACP 1:16 4140 Chrome Moly Steel Barrel - 5/8x24
    TacFire AR-15 Blowback .45 ACP 1:16 4140 Chrome Moly Steel Barrel - 5/8x24
    (1)
    $109.99 $79.99 $84.99 Save $30.00
  3. TacFire AR-15 .45 ACP Upper Receiver
    TacFire AR-15 .45 ACP Upper Receiver
    (1)
    $399.99 $279.99 $289.99 Save $120.00
  4. TacFire AR-15 300 Blackout Unassembled Pistol Kit w/ Lower Parts Kit
    TacFire AR-15 300 Blackout Unassembled Pistol Kit w/ Lower Parts Kit
    (1)
    $359.99 $499.99 $309.99 $329.99 Save $170.00
  6. Ballistic Advantage Premium Series AR-15 Pistol-Length Gas .300 BLK 1:7 SS Barrel w/ Lo Pro Gas Block
    Ballistic Advantage Premium Series AR-15 Pistol-Length Gas .300 BLK 1:7 SS Barrel w/ Lo Pro Gas Block
    $220.99 $230.99 $124.99 Save $106.00
  7. TacFire AR-15 .45 ACP Unassembled Pistol Kit w/ Lower Parts Kit
    TacFire AR-15 .45 ACP Unassembled Pistol Kit w/ Lower Parts Kit
    $499.99 $309.99 $329.99 Save $190.00
  8. PROOF Research AR-15 .223 Wylde Stainless Steel Barrel
    PROOF Research AR-15 .223 Wylde Stainless Steel Barrel
    $629.99 $749.99 $569.99 $649.99 Save $100.00
  9. DMA Inc. XTS AR-15 Pistol-Length Gas .300 Blackout 1:8 4150 CMV Barrel
    DMA Inc. XTS AR-15 Pistol-Length Gas .300 Blackout 1:8 4150 CMV Barrel
    $120.99 $144.99 $89.99 Save $55.00
  10. PROOF Research AR-15 .223 Wylde 1:7 Carbon Fiber-Wrapped Barrel
    PROOF Research AR-15 .223 Wylde 1:7 Carbon Fiber-Wrapped Barrel
    $999.99 $1,149.99 $899.99 $999.99 Save $150.00
  13. PROOF Research AR-15 6mm ARC 1:7.5 Stainless Steel Barrel
    PROOF Research AR-15 6mm ARC 1:7.5 Stainless Steel Barrel
    $749.99 $649.99 Save $100.00
  14. PROOF Research AR-15 .300 BLK Stainless Steel Barrel
    PROOF Research AR-15 .300 BLK Stainless Steel Barrel
    $629.99 $749.99 $569.99 $649.99 Save $100.00
  15. PROOF Research AR-15 6mm ARC 1:7.5 Carbon Fiber-Wrapped Barrel
    PROOF Research AR-15 6mm ARC 1:7.5 Carbon Fiber-Wrapped Barrel
    $1,149.99 $999.99 Save $150.00
  16. TacFire AR-15 Pistol-Length Gas .300 Blackout 1:8 Nitride Barrel
    TacFire AR-15 Pistol-Length Gas .300 Blackout 1:8 Nitride Barrel
    $101.99 $109.99 $79.99 $104.99 Save $25.00
  17. Faxon Firearms Match Series AR-15 Pistol-Length Gas .300 Blackout SS Barrel
    Faxon Firearms Match Series AR-15 Pistol-Length Gas .300 Blackout SS Barrel
    $188.99 $197.99 $173.99 $182.99 Save $15.00
  18. Faxon Firearms Duty Series AR-15 .300 Blackout 1:8 4150 CMV Barrel
    Faxon Firearms Duty Series AR-15 .300 Blackout 1:8 4150 CMV Barrel
    $160.99 $173.99 $148.99 $160.99 Save $13.00
  19. TacFire AR-15 .45 ACP Unassembled Upper Receiver Kit
    TacFire AR-15 .45 ACP Unassembled Upper Receiver Kit
    $449.99 $269.99 $274.99 Save $180.00
  20. TacFire AR-15 .300 Blackout Upper Receiver
    TacFire AR-15 .300 Blackout Upper Receiver
    (2)
    $309.99 $399.99 $254.99 $299.99 Save $145.00
  22. CMMG AR-15 .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
  23. Ballistic Advantage Premium Series AR-15 6mm ARC 1:7 SS Barrel
    Ballistic Advantage Premium Series AR-15 6mm ARC 1:7 SS Barrel
    $235.99 $315.99 $169.99 $189.99 Save $126.00
  24. Ballistic Advantage Modern Series AR-15 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 $84.99 $99.99 Save $81.00
  25. Ballistic Advantage Premium Black Series AR-15 6mm ARC 1:7 SS Barrel
    Ballistic Advantage Premium Black Series AR-15 6mm ARC 1:7 SS Barrel
    $245.99 $275.99 $154.99 $184.99 Save $101.00
  26. Ballistic Advantage Premium Series AR-15 6.5 Grendel 1:8 SS Barrel
    Ballistic Advantage Premium Series AR-15 6.5 Grendel 1:8 SS Barrel
    $204.99 $305.99 $204.99 $289.99 Save $16.00
  27. Faxon Firearms Match Series AR-15 .338 ARC SS Barrel
    Faxon Firearms Match Series AR-15 .338 ARC SS Barrel
    $218.99 $224.99 $201.99 $207.99 Save $17.00
  30. CMMG DISSENT Mk4 AR-15 6.5" .300 BLK Upper Receiver w/ 5.5" M-LOK Handguard
    CMMG DISSENT Mk4 AR-15 6.5" .300 BLK Upper Receiver w/ 5.5" M-LOK Handguard
    Out of stock
    $1,349.99 $1,024.99 Save $325.00
  35. Odin Works AR-15 21 XL Rifle-Length Gas 6mm ARC 1:7.5 Stainless Steel Barrel with .875 Adjustable Gas Block
    Odin Works AR-15 21 XL Rifle-Length Gas 6mm ARC 1:7.5 Stainless Steel Barrel with .875 Adjustable Gas Block
    Out of stock
    $399.99 $454.99 $379.99 $434.99 Save $20.00
  38. Odin Works AR-15 .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
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