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    5/8x24
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Inventory
  1. In Stock 108 items
  2. Out of Stock 28 items
Customer Rating
  1. 5
    3 items
  2. 4
    & up     5 items
  3. 3
    & up     8 items
  4. 1
    & up     9 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. 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 $195.99 $173.99 $180.99 Save $15.00
  3. 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
    $1,349.99 $1,024.99 Save $325.00
  4. 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
  5. TacFire AR-10 .308 / 7.62x51 Unassembled Rifle Kit w/ Lower Parts Kit
    TacFire AR-10 .308 / 7.62x51 Unassembled Rifle Kit w/ Lower Parts Kit
    (1)
    $699.99 $419.99 Save $280.00
  6. TacFire AR-15 .45 ACP Upper Receiver
    TacFire AR-15 .45 ACP Upper Receiver
    (2)
    $399.99 $279.99 $289.99 Save $120.00
  8. TacFire AR-15 .300 Blackout Stainless Steel Barrel
    TacFire AR-15 .300 Blackout Stainless Steel Barrel
    $101.99 $109.99 $79.99 $104.99 Save $30.00
  11. 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
  12. 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
  13. 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
  14. 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
  19. 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 $147.99 $171.99 Save $9.00
  20. 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 $223.99 $299.99 Save $16.00
  21. Primary Weapons Systems UXR Elite .300 Blackout Conversion Kit
    Primary Weapons Systems UXR Elite .300 Blackout Conversion Kit
    $575.99 $499.99 Save $76.00
  23. 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
  24. 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
  25. 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
  26. Faxon Firearms Duty Series AR-10 .308 WIN 1:10 4150 CMV Barrel
    Faxon Firearms Duty Series AR-10 .308 WIN 1:10 4150 CMV Barrel
    $236.99 $218.99 Save $18.00
  32. Sig Sauer Cross 6.5 Creedmoor Caliber X-Change Kit
    Sig Sauer Cross 6.5 Creedmoor Caliber X-Change Kit
    $599.99 $499.99 Save $100.00
  35. Faxon Firearms Match Series AR-10 .308 Winchester Stainless Steel Barrel
    Faxon Firearms Match Series AR-10 .308 Winchester Stainless Steel Barrel
    $319.99 $322.99 $294.99 $297.99 Save $25.00
  36. Ballistic Advantage Modern AR-10 .308 Win 1:10 CMV Barrel
    Ballistic Advantage Modern AR-10 .308 Win 1:10 CMV Barrel
    $199.99 $250.99 $199.99 $237.99 Save $13.00
  37. Faxon Firearms Match Series AR-10 20" Rifle-Length Gas .308 Win 1:10 SS Barrel
    Faxon Firearms Match Series AR-10 20" Rifle-Length Gas .308 Win 1:10 SS Barrel
    $324.99 $299.99 Save $25.00
  38. TacFire AR-10 .308 / 7.62x51mm Upper Receiver
    TacFire AR-10 .308 / 7.62x51mm Upper Receiver
    (1)
    $499.99 $354.99 $369.99 Save $145.00
  39. Ballistic Advantage Premium Black AR-10 .308 Winchester Stainless Steel Barrel
    Ballistic Advantage Premium Black AR-10 .308 Winchester Stainless Steel Barrel
    $270.99 $280.99 $256.99 $266.99 Save $14.00
  40. 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
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