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  1. Caliber
    5.56mm NATO
  2. Upper Type
    Rifle
Brand
  1. Aero Precision 7 items
  2. Aim Sports Inc 2 items
  3. Battle Arms Development 4 items
  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
  11. Spike's Tactical 3 items
  12. TacFire Inc. 2 items
Color
  1. Black 26 items
  2. Black Nitride 2 items
  3. Brown 1 item
  4. Desert Dirt Color 3 items
  5. Flat Dark Earth 3 items
  6. Kodiak Brown 1 item
  7. Olive Drab Green 2 items
Thread Pattern
  1. 1/2x28 30 items
  2. 1/2x36 1 item
Caliber
  1. 22 ARC 1 item
  2. 22 Long Rifle 1 item
  3. 223 Remington 25 items
  4. 300 AAC Blackout 1 item
  5. 308 Winchester 8 items
  6. 350 Legend 1 item
  7. 45 Auto (ACP) 1 item
  8. 5.56mm NATO 31 items
  9. 5.7 x 28mm 1 item
  10. 6mm ARC 1 item
  11. 6.5 Creedmoor 4 items
  12. 6.5 Grendel 1 item
  13. 7.62 x 39mm 1 item
  14. 9mm Luger 3 items
Attachment Type
  1. KeyMod 1 item
  2. MLOK 20 items
  3. Picatinny 7 items
Handguard Length
  1. 4" 1 item
  2. 8.9" 1 item
  3. 9" 1 item
  4. 10" 3 items
  5. 12" 1 item
  6. 12.25" 2 items
  7. 13.5" 2 items
  8. 15" 17 items
  9. Carbine Length 1 item
  10. Mid Length 1 item
Handguard Style
  1. Free Float 23 items
Upper Type
  1. Pistol 6 items
  2. Rifle 31 items
Options
  1. W/ BCG & CH 24 items
  2. W/O BCG & CH 7 items
Barrel Length
  1. 5" 1 item
  2. 7" 1 item
  3. 10.5" 3 items
  4. 12.5" 1 item
  5. 14.5" 1 item
  6. 16" 28 items
  7. 16.25" 1 item
  8. 20" 1 item
Material
  1. 4150 Chrome Moly Vanadium 3 items
  2. Aluminum 20 items
  3. Chrome Moly Venadium Steel 2 items
Inventory
  1. In Stock 15 items
  2. Out of Stock 16 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 Upper Receiver
    TacFire AR-15 .223 / 5.56 Upper Receiver
    (1)
    $299.99 $259.99 $299.99 Save $40.00
  2. 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
  3. 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
  5. 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
  6. 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
  8. 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
  10. 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
  15. 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
  18. 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
  19. Aero Precision AR-15 16" 5.56 Upper Receiver w/ Magpul MOE SL M-LOK Handguard
    Aero Precision AR-15 16" 5.56 Upper Receiver w/ Magpul MOE SL M-LOK Handguard
    Out of stock
    $460.99 $414.99 Save $46.00
  23. 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
  24. Aero Precision M4E1 AR-15 Upper Receiver
    Aero Precision M4E1 AR-15 Upper Receiver
    Out of stock
    $175.99 $190.99 $159.99 $174.99 Save $16.00
  26. Aero Precision M4E1 AR-15 16" CMV 5.56 Upper Receiver w/ 15" ATLAS S-ONE M-LOK Handguard
    Aero Precision M4E1 AR-15 16" CMV 5.56 Upper Receiver w/ 15" ATLAS S-ONE M-LOK Handguard
    Out of stock
    $655.99 $690.99 $589.99 $624.99 Save $66.00
  30. 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
  31. 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
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