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  1. Caliber
    5.56mm NATO
  2. Options
    W/ BCG & CH
Brand
  1. Aim Sports Inc 2 items
  2. Battle Arms Development 4 items
  3. CMMG 1 item
  4. Daniel Defense 4 items
  5. Faxon Firearms 1 item
  6. FightLite 1 item
  7. FNH Magazines 1 item
  8. Geissele Automatics 4 items
  9. Luth-AR 1 item
  10. Noveske 1 item
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  12. TacFire Inc. 5 items
Color
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  2. Black 23 items
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  6. Tungsten 1 item
Thread Pattern
  1. 1/2x28 28 items
  2. 1/2x36 1 item
Caliber
  1. 10mm Auto 1 item
  2. 22 ARC 1 item
  3. 22 Long Rifle 5 items
  4. 223 Remington 21 items
  5. 300 AAC Blackout 6 items
  6. 308 Winchester 9 items
  7. 350 Legend 3 items
  8. 45 Auto (ACP) 4 items
  9. 458 Socom 1 item
  10. 5.56mm NATO 28 items
  11. 5.7 x 28mm 4 items
  12. 6mm ARC 1 item
  13. 6.5 Creedmoor 3 items
  14. 7.62 x 39mm 5 items
  15. 9mm Luger 6 items
Attachment Type
  1. KeyMod 1 item
  2. MLOK 19 items
  3. Picatinny 6 items
Handguard Length
  1. 4" 4 items
  2. 9" 1 item
  3. 9.6" 1 item
  4. 10" 4 items
  5. 12" 1 item
  6. 12.25" 2 items
  7. 13.5" 2 items
  8. 15" 14 items
  9. Carbine Length 1 item
  10. Mid Length 1 item
Handguard Style
  1. Free Float 21 items
Upper Type
  1. Pistol 6 items
  2. Rifle 24 items
Options
  1. W/ BCG & CH 28 items
  2. W/O BCG & CH 14 items
Barrel Length
  1. 5" 4 items
  2. 7" 2 items
  3. 7.5" 1 item
  4. 10" 1 item
  5. 10.5" 5 items
  6. 12.5" 1 item
  7. 14.5" 2 items
  8. 16" 24 items
  9. 16.25" 1 item
Material
  1. Aluminum 16 items
  2. Chrome Moly Venadium Steel 2 items
Inventory
  1. In Stock 13 items
  2. Out of Stock 15 items
Customer Rating
  1. 5
    2 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!

  1. TacFire AR-15 .223 / 5.56 Unassembled Upper Receiver Kit
    TacFire AR-15 .223 / 5.56 Unassembled Upper Receiver Kit
    $399.99 $264.99 $299.99 Save $135.00
  2. TacFire AR-15 .223 / 5.56 Upper Receiver
    TacFire AR-15 .223 / 5.56 Upper Receiver
    (1)
    $299.99 $259.99 $299.99 Save $40.00
  3. CMMG DISSENT Mk4 AR-15 10.5" CM 5.56MM Upper Receiver w/ 9.6" M-LOK Handguard
    CMMG DISSENT Mk4 AR-15 10.5" CM 5.56MM Upper Receiver w/ 9.6" M-LOK Handguard
    (1)
    $1,349.99 $1,399.99 $1,024.99 $1,035.99 Save $364.00
  4. Battle Arms Development WORKHORSE Mod C AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    Battle Arms Development WORKHORSE Mod C AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    Out of stock
    $692.99 $659.99 Save $33.00
  5. Geissele Automatics Super Duty MOD1 AR-15 13.9" Pinned / 16" OAL 5.56 Upper Receiver with Free Float M-LOK Handguard
    Geissele Automatics Super Duty MOD1 AR-15 13.9" Pinned / 16" OAL 5.56 Upper Receiver with Free Float M-LOK Handguard
    Out of stock
    $1,325.99 $1,450.99
  7. Battle Arms Development Authority Elite AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    Battle Arms Development Authority Elite AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    $865.99 $824.99 Save $41.00
  8. FightLite MCR Dual-Feed AR-15 16.25" Assembled Upper Receiver
    FightLite MCR Dual-Feed AR-15 16.25" Assembled Upper Receiver
    Out of stock
    $6,399.99 $5,899.99 Save $500.00
  10. Battle Arms Development WORKHORSE AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    Battle Arms Development WORKHORSE AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    $724.99 $692.99 Save $32.00
  12. Battle Arms Development Authority Elite Mod C AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    Battle Arms Development Authority Elite Mod C AR-15 16" CMV 5.56 Upper Receiver w/ 15" M-LOK Handguard
    $865.99 $824.99 Save $41.00
  15. TacFire AR-15 .223 / 5.56 Unassembled Pistol Kit w/ Lower Parts Kit
    TacFire AR-15 .223 / 5.56 Unassembled Pistol Kit w/ Lower Parts Kit
    Out of stock
    $399.99 $279.99 $349.99 Save $120.00
  19. Geissele Automatics Super Duty MOD1 AR-15 14.5" Pinned / 16" OAL 5.56 Upper Receiver with Free Float M-LOK Handguard
    Geissele Automatics Super Duty MOD1 AR-15 14.5" Pinned / 16" OAL 5.56 Upper Receiver with Free Float M-LOK Handguard
    Out of stock
    $1,325.99 $1,450.99
  20. Geissele Automatics Super Duty MOD1 AR-15 16" 5.56 NATO Upper Receiver with 15" SMR MK16 M-LOK Handguard
    Geissele Automatics Super Duty MOD1 AR-15 16" 5.56 NATO Upper Receiver with 15" SMR MK16 M-LOK Handguard
    Out of stock
    $1,325.99 $1,450.99
  26. Aim Sports AR-15 .223 / 5.56 Assembled Upper Receiver w/ Lower Build Kit
    Aim Sports AR-15 .223 / 5.56 Assembled Upper Receiver w/ Lower Build Kit
    Out of stock
    $599.99 $449.99 $462.99 Save $150.00
  27. Aim Sports AR-15 .223 / 5.56 Assembled Upper Receiver w/ M-LOK Handguard
    Aim Sports AR-15 .223 / 5.56 Assembled Upper Receiver w/ M-LOK Handguard
    Out of stock
    $459.99 $343.99 Save $116.00
  28. Faxon ARAK-21 AR-15 5.56 NATO Upper Receiver w/ Picatinny Handguard
    Faxon ARAK-21 AR-15 5.56 NATO Upper Receiver w/ Picatinny Handguard
    $999.99 $920.99 Save $79.00
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