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    Black
  2. Platform
    Heckler & Koch
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  2. Heckler & Koch Magazines 32 items
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Thread Pattern
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Caliber
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  2. 40 S&W 2 items
  3. 45 Auto (ACP) 4 items
  4. 9mm Luger 3 items
Reticle Dot Size
  1. 2 MOA Dot / 32 MOA Circle 1 item
Reticle
  1. Circle 1 item
  2. Circle Dot 1 item
  3. Dot 1 item
Attachment Type
  1. KeyMod 1 item
  2. MLOK 5 items
Handguard Length
  1. 2.56" 1 item
  2. 5.65" 1 item
  3. 7.3" 1 item
  4. 9.31" 1 item
  5. 9.6" 1 item
  6. 10.3" 1 item
  7. 11.66" 1 item
  8. 12" 1 item
  9. 14.1" 1 item
  10. 16" 1 item
Handguard Style
  1. Free Float 2 items
Sight Style
  1. Tritium Night Sight 5 items
Barrel Length
  1. 4.45" 2 items
  2. 4.46" 1 item
  3. 4.57" 1 item
  4. 4.7" 1 item
  5. 4.9" 1 item
  6. 5" 1 item
  7. 5.09" 1 item
  8. 5.2" 1 item
Material
  1. Aluminum 11 items
  2. Polymer 7 items
  3. Steel 5 items
  4. Steel / Polymer 1 item
Footprint
  1. H&K VP9 1 item
Inventory
  1. In Stock 28 items
  2. Out of Stock 20 items
Customer Rating
  1. 5
    7 items
  2. 4
    & up     8 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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  8. HK SP5K / MP5K Folding Stock
    HK SP5K / MP5K Folding Stock
    $438.99 $329.99 Save $109.00
  13. Aim Sports HK91 Handguard
    Aim Sports HK91 Handguard
    $79.99 $99.99 $59.99 $69.99 Save $30.00
  19. Aim Sports HK91 / G3 M-LOK Extended Handguard
    Aim Sports HK91 / G3 M-LOK Extended Handguard
    $119.99 $129.99 $89.99 $99.99 Save $30.00
  29. Magpul SL Stock - HK94/MP5
    Magpul SL Stock - HK94/MP5
    Out of stock
    (17)
    $159.99 $129.99 Save $30.00
  30. HK MP5 / HK90 Large Buttstock Push Pin
    HK MP5 / HK90 Large Buttstock Push Pin
    Out of stock
    $8.99 $7.99 Save $1.00
  31. Midwest Industries MP5 SD M-LOK Handguard
    Midwest Industries MP5 SD M-LOK Handguard
    Out of stock
    $179.99 $199.99 $169.99 $189.99 Save $10.00
  32. HK Threaded Barrel for USP45 Compact Tactical - 16x1 LH
    HK Threaded Barrel for USP45 Compact Tactical - 16x1 LH
    Out of stock
    $303.99 $252.99 Save $51.00
  34. PTR HG M-LOK Handguard
    PTR HG M-LOK Handguard
    Out of stock
    $99.99 $149.99 $89.99 $135.99 Save $14.00
  37. HK SP5, MP5, MP5SD Fixed Stock
    HK SP5, MP5, MP5SD Fixed Stock
    Out of stock
    $183.99 $152.99 Save $31.00
  38. HK SP5, MP5 HK94 3-Position Retractable Stock
    HK SP5, MP5 HK94 3-Position Retractable Stock
    Out of stock
    $820.99 $634.99 Save $186.00
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