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  1. Platform
    AR-15
  2. Caliber
    5.56mm NATO
Brand
  1. Aero Precision 7 items
  2. Aim Sports Inc 2 items
  3. Ballistic Advantage 16 items
  4. Battle Arms Development 5 items
  5. Black Rain Ordnance 1 item
  6. CMMG 1 item
  7. Daniel Defense 5 items
  8. Diamondback 2 items
  9. DMA Inc. 3 items
  10. FAB Defense 2 items
  11. Faxon Firearms 4 items
  12. FightLite 1 item
  13. FNH Magazines 4 items
  14. Fortis Manufacturing 1 item
  15. Geissele Automatics 4 items
  16. KAK Industry 1 item
  17. LBE Unlimited 2 items
  18. Luth-AR 1 item
  19. Noveske 2 items
  20. Odin Works 5 items
  21. PROOF Research 2 items
  22. Rosco Manufacturing 4 items
  23. Seekins Precision 1 item
  24. Spike's Tactical 3 items
  25. TacFire Inc. 12 items
  26. Watchtower - F-1 1 item
Color
  1. Armor Black 1 item
  2. Bead Blasted 4 items
  3. Black 69 items
  4. Black Nitride 4 items
  5. Brown 1 item
  6. Carbon Fiber 1 item
  7. Desert Dirt Color 3 items
  8. Flat Dark Earth 3 items
  9. Hard Coat Anodized 2 items
  10. Kodiak Brown 1 item
  11. Olive Drab Green 2 items
  12. Silver 10 items
  13. Tungsten 1 item
Thread Pattern
  1. 1/2x28 79 items
  2. 1/2x36 1 item
  3. 5/8x24 2 items
Platform
  1. AR-15 92 items
  2. Primary Weapons Systems 1 item
Caliber
  1. 10mm Auto 1 item
  2. 22 ARC 10 items
  3. 22 Long Rifle 14 items
  4. 223 Remington 71 items
  5. 223 Wylde 24 items
  6. 300 AAC Blackout 25 items
  7. 338 ARC 1 item
  8. 350 Legend 8 items
  9. 45 Auto (ACP) 5 items
  10. 458 Socom 1 item
  11. 5.56mm NATO 92 items
  12. 5.7 x 28mm 5 items
  13. 6mm ARC 14 items
  14. 6.5 Grendel 12 items
  15. 7.62 x 39mm 8 items
  16. 9mm Luger 15 items
Capacity
  1. 10-Round 2 items
Attachment Type
  1. KeyMod 1 item
  2. MLOK 24 items
  3. Picatinny 8 items
Handguard Length
  1. 4" 4 items
  2. 8.9" 1 item
  3. 9" 1 item
  4. 9.6" 1 item
  5. 10" 4 items
  6. 12" 1 item
  7. 12.25" 2 items
  8. 13.5" 2 items
  9. 15" 19 items
  10. Carbine Length 1 item
  11. Mid Length 1 item
Handguard Style
  1. Free Float 26 items
Upper Type
  1. Pistol 6 items
  2. Rifle 32 items
Options
  1. W/ BCG & CH 28 items
  2. W/O BCG & CH 15 items
Barrel Length
  1. 5" 5 items
  2. 7" 2 items
  3. 7.5" 6 items
  4. 8" 1 item
  5. 10" 2 items
  6. 10.3" 2 items
  7. 10.5" 10 items
  8. 11.3" 2 items
  9. 11.5" 5 items
  10. 12.3" 1 item
  11. 12.5" 4 items
  12. 13.7" 2 items
  13. 13.9" 4 items
  14. 14.5" 13 items
  15. 14.7" 3 items
  16. 16" 65 items
  17. 16.1" 3 items
  18. 16.25" 1 item
  19. 16.325" 1 item
  20. 16.5" 1 item
  21. 17.7" 2 items
  22. 18" 14 items
  23. 20" 10 items
Material
  1. 416R Stainless Steel 18 items
  2. 4150 Chrome Moly Vanadium 13 items
  3. Aluminum 27 items
  4. Carbon Fiber / Steel 1 item
  5. Chrome Moly Venadium Steel 14 items
  6. Polymer 2 items
  7. Stainless Steel 5 items
Inventory
  1. In Stock 58 items
  2. Out of Stock 34 items
Customer Rating
  1. 5
    6 items
  2. 4
    & up     7 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. FN M16A2 Style 14.7" Carbine-Length Gas 5.56 NATO Barrel
    FN M16A2 Style 14.7" Carbine-Length Gas 5.56 NATO Barrel
    Out of stock
    $349.99 $135.99 Save $214.00
  5. 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
  6. 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
  7. Fortis Manufacturing Billet AR-15 Stripped Upper Receiver
    Fortis Manufacturing Billet AR-15 Stripped Upper Receiver
    Out of stock
    $199.99 $189.99 Save $10.00
  8. Watchtower - F-1 AR-15 16" Mid-Length Gas .223 Wylde 1:8 Spiral Fluted SS Barrel
    Watchtower - F-1 AR-15 16" Mid-Length Gas .223 Wylde 1:8 Spiral Fluted SS Barrel
    Out of stock
    $279.99 $258.99 Save $21.00
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