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  1. Attachment Type
    MLOK
  2. Options
    W/ BCG & CH
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  1. Aim Sports Inc 2 items
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  10. 15.25" 2 items
  11. 16" 2 items
Handguard Style
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Upper Type
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  2. Rifle 40 items
Options
  1. BCG Only 1 item
  2. W/ BCG & CH 67 items
  3. W/O BCG & CH 6 items
Barrel Length
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  2. 4.5" 2 items
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  4. 6" 1 item
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  6. 7" 7 items
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  10. 9" 1 item
  11. 10" 9 items
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  13. 12" 1 item
  14. 12.5" 1 item
  15. 14.5" 2 items
  16. 16" 37 items
  17. 16.1" 6 items
  18. 16.25" 1 item
  19. 18" 7 items
  20. 18.5" 1 item
  21. 20" 6 items
Material
  1. 4150 Chrome Moly Vanadium 1 item
  2. Aluminum 24 items
  3. Chrome Moly Venadium Steel 2 items
  4. Steel 3 items
Inventory
  1. In Stock 50 items
  2. Out of Stock 17 items
Customer Rating
  1. 5
    5 items
  2. 4
    & up     6 items
  3. 3
    & up     9 items
  4. 2
    & up     10 items
  5. 1
    & up     11 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. 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
  3. 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
  4. RISE Armament AR-15 18" SS 22 ARC Assembled Upper Receiver with Free Float 15" M-LOK Handguard
    RISE Armament AR-15 18" SS 22 ARC Assembled Upper Receiver with Free Float 15" M-LOK Handguard
    $1,199.99 $999.99 Save $200.00
  5. RISE Armament AR-15 18" SS 6mm ARC Assembled Upper Receiver with Free-Float 15" M-LOK Handguard
    RISE Armament AR-15 18" SS 6mm ARC Assembled Upper Receiver with Free-Float 15" M-LOK Handguard
    $1,199.99 $999.99 Save $200.00
  11. TacFire AR-15 16" .350 Legend Upper Receiver
    TacFire AR-15 16" .350 Legend Upper Receiver
    Out of stock
    $399.99 $279.99 Save $120.00
  12. 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. 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
  16. 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
  17. 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
  19. 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
  20. 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
  21. 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. 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
    $724.99 $589.99 Save $135.00
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