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  1. Platform
    AR-15
  2. Options
    W/ BCG & CH
Brand
  1. Aim Sports Inc 2 items
  2. Angstadt Arms 1 item
  3. Battle Arms Development 4 items
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  18. Primary Weapons Systems 4 items
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Color
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Thread Pattern
  1. 1/2x28 46 items
  2. 1/2x36 5 items
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Platform
  1. AR-10 11 items
  2. AR-15 78 items
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Caliber
  1. 22 ARC 1 item
  2. 22 Long Rifle 5 items
  3. 223 Remington 23 items
  4. 223 Wylde 2 items
  5. 300 AAC Blackout 7 items
  6. 338 ARC 1 item
  7. 350 Legend 5 items
  8. 45 Auto (ACP) 4 items
  9. 458 Socom 1 item
  10. 5.56mm NATO 33 items
  11. 5.7 x 28mm 4 items
  12. 6mm ARC 1 item
  13. 7.62 x 39mm 7 items
  14. 9mm Luger 8 items
Attachment Type
  1. KeyMod 2 items
  2. MLOK 60 items
  3. Picatinny 10 items
Handguard Length
  1. 4" 12 items
  2. 5.5" 5 items
  3. 6.5" 1 item
  4. 7" 4 items
  5. 7.5" 1 item
  6. 9" 1 item
  7. 9.6" 3 items
  8. 10" 10 items
  9. 10.5" 1 item
  10. 11.8" 2 items
  11. 12" 1 item
  12. 12.25" 2 items
  13. 13.5" 3 items
  14. 15" 24 items
  15. 15.25" 2 items
  16. 16" 2 items
  17. Carbine Length 1 item
  18. Mid Length 1 item
Handguard Style
  1. Free Float 52 items
Upper Type
  1. Pistol 21 items
  2. Rifle 48 items
Options
  1. BCG Only 1 item
  2. W/ BCG & CH 78 items
  3. W/O BCG & CH 39 items
Barrel Length
  1. 4" 5 items
  2. 4.5" 2 items
  3. 5" 13 items
  4. 6" 1 item
  5. 6.5" 3 items
  6. 7" 7 items
  7. 7.5" 6 items
  8. 8" 2 items
  9. 8.5" 1 item
  10. 9" 1 item
  11. 10" 9 items
  12. 10.5" 8 items
  13. 12" 1 item
  14. 12.5" 3 items
  15. 14.5" 2 items
  16. 16" 45 items
  17. 16.1" 7 items
  18. 16.25" 1 item
  19. 18" 2 items
  20. 24" 1 item
Material
  1. 4150 Chrome Moly Vanadium 1 item
  2. Aluminum 36 items
  3. Chrome Moly Venadium Steel 2 items
  4. Steel 3 items
  5. Steel / Polymer 2 items
Inventory
  1. In Stock 50 items
  2. Out of Stock 28 items
Customer Rating
  1. 5
    4 items
  2. 4
    & up     5 items
  3. 3
    & up     8 items
  4. 2
    & 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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  4. 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
  5. FightLite MCR Dual-Feed AR-15 16.25" Assembled Upper Receiver
    FightLite MCR Dual-Feed AR-15 16.25" Assembled Upper Receiver
    $6,399.99 $5,899.99 Save $500.00
  6. CMMG BANSHEE AR-15 5" CM 5.7x28 Upper Receiver w/ EML4 4" M-LOK Handguard
    CMMG BANSHEE AR-15 5" CM 5.7x28 Upper Receiver w/ EML4 4" M-LOK Handguard
    $899.99 $749.99 Save $150.00
  9. CMMG BANSHEE Mk4 AR-15 9" CM .22 LR Upper Receiver w/ EML7 7" M-LOK Handguard
    CMMG BANSHEE Mk4 AR-15 9" CM .22 LR Upper Receiver w/ EML7 7" M-LOK Handguard
    Out of stock
    $749.99 $589.99 Save $160.00
  13. CMMG BANSHEE Mk4 AR-15 4.5" CM .22 LR Upper Receiver w/ EML4 4" M-LOK Handguard
    CMMG BANSHEE Mk4 AR-15 4.5" CM .22 LR Upper Receiver w/ EML4 4" M-LOK Handguard
    Out of stock
    $724.99 $589.99 Save $135.00
  14. Panzer Arms AR57 ULT AR-15 Steel 5.7x28mm Upper Receiver w/ M-LOK Handguard
    Panzer Arms AR57 ULT AR-15 Steel 5.7x28mm Upper Receiver w/ M-LOK Handguard
    Out of stock
    $644.99 $599.99 $619.99 Save $45.00
  15. 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
  16. 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
  25. 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
    Out of stock
    $999.99 $920.99 Save $79.00
  26. Faxon ARAK-21 AR-15 7.62x39 Upper Receiver w/ Picatinny Handguard
    Faxon ARAK-21 AR-15 7.62x39 Upper Receiver w/ Picatinny Handguard
    Out of stock
    $999.99 $920.99 Save $79.00
  27. 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
  36. 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
  37. 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
  38. 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
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