HK Rifle / SMG Parts

HK Rifle / SMG Parts

Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!

Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.

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  • New - HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant - HKP-12746 HK416, HK417, G3, HK33, G36 Flash Hider - Threaded 15x1 RH - CA/NY Compliant
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    HK416, HK417, G3, HK33, G36 Flash Hider - Threaded 15x1 RH - CA/NY Compliant

    HKP HK Parts

    $24.95
    HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant This muzzle device is a partially milled version (not completely milled) of the factory HK birdcage style flash hider found on the factory-correct HK models of rifles...
    HKP-12746
    $24.95
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    $24.95
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  • New - HKP HK 93/53/33 (5.56/.223) Receiver Flat With Weldment Set - HKP-00006
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    HK33, HK53, HK93 Receiver Flat - Complete Weldment Set

    HKP HK Parts

    $229.95
    HK .223, 556, & 300 BLK Receiver Flat With Complete Weldment Set Combo   Each flat and weldment set comes with 223/556/300BLK complete as a builders combo ready to assemble.   Compatible With: HK93, HK33, & HK53 Style Builds 300...
    HKP-00006
    $229.95
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    $229.95
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  • New - H&K MP5K 9mm SEF Navy Style Trigger Housing - Push Pin - HKP-02463 HK MP5K 9mm SEF Navy Style Trigger Housing - Push Pin
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    HK MP5K 9mm SEF Navy Style Trigger Housing - Push Pin

    H&K Heckler & Koch

    $159.95
    H&K MP5K 9mm SEF Navy Style Trigger Housing - Push Pin HK German factory SEF grip frame that has been cut to MP5K factory German specs. This style of housing is for push-pin firearms that do not require clipped and pinned housing...
    HKP-02463
    $159.95
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    $159.95
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  • New - H&K MP5/SP5 Universal SEF Housing - Like New - HKP-21779 HK MP5, SP5 Trigger Housing - SEF Universal - Like New
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    HK MP5, SP5 Trigger Housing - SEF Universal - Like New

    H&K Heckler & Koch

    $149.95
    H&K MP5/SP5 SEF Universal Housing - Clipped & Pinned - Like New The ultimate solution for MP5 and SP5 style receivers, this universal trigger housing simplifies swapping between receivers. German HK-manufactured, it allows you to easily transfer...
    HKP-21779
    $149.95
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    $149.95
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    New - B&T HK MP5/K Magazine Loader - HKP-21687 HK MP5, MP5K, SP5, SP5K Magazine Loader

    HK MP5, MP5K, SP5, SP5K Magazine Loader

    B&T Brugger & Thomet

    $24.00
    B&T Brugger and Thomet Magazine Loader for HK MP5, MP5K and HK SP5, HK SP5K The world’s fastest magazine loader. The B&T magazine loader loads your MP5 magazines directly from the ammo box tray into the magazine in a fraction of the time...
    HKP-21687
    $24.00
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    $24.00
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  • New - Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston - HKP-21364 HK416, MR556, G36, SL8 Gas Piston
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    HK416, MR556, G36, SL8 Gas Piston

    Nefarious Arms

    $74.95
    Nefarious Arms Gas Piston for HK G36, HK SL8, HK416 and HK MR556 A great spare, upgrade, or replacement part for your HK. Includes 3 piston rings for a complete drop in replacement part. TiN coated for corrosion resistance.  Compatible...
    HKP-21364
    $74.95
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    $74.95
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  • New - Magpul HK 91 MOE PR Stock - HKP-21198 HK91, G3 Stock - MOE PR
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    HK91, G3 Stock - MOE PR

    Magpul

    $199.95
    Magpul HK91, G3 MOE PR Stock The MOE PR is a full-size carbine stock that blends the simplicity of the legacy MOE carbine stock with design lines reminiscent of the PRS Lite.  Features: Sloping cheek weld Non-slip rubber butt-pad for impact...
    HKP-21198
    $199.95
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    $199.95
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  • New - HKP HK MP5 .22LR Brace/Stock Adapter - HKP-20795-M HK MP5 Brace and Stock Adapter - .22LR
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    HK MP5 Brace and Stock Adapter - .22LR

    HKP HK Parts

    $99.95 - $109.95
    HKP HK MP5 .22LR Brace and Stock Adapter This is the perfect folding stock adapter to replace the polymer end cap on your MP5 .22.  CNC machined from a solid billet of aircraft grade aluminum and cerakote for a durable finish.  Compatible with...
    HKP-20795-M
    $99.95 - $109.95
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    $99.95 - $109.95
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  • New - H&K HK MR556//MR762/416 Bolt Catch Plunger - HKP-02655
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    HK416, MR556, MR762 Bolt Catch Plunger

    H&K Heckler & Koch

    $9.95
    Heckler and Koch HK MR556 and HK416 Bolt Catch Plunger Compatible With: HK416, MR556 HK MR762
    HKP-02655
    $9.95
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    $9.95
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  • Out Of Stock
    New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Front Sight - HKP-00254 HK UMP, USC Front Sight - 9mm / .40 S&W / .45 ACP

    HK UMP, USC Front Sight - 9mm / .40 S&W / .45 ACP

    H&K Heckler & Koch

    $14.95
    New HK German Factory USC/UMP Front Sight This is a common wear or breakage part. This part is easy to swap out by just knocking out the roll pin, replacing it, and then re-inserting the roll pin. This is a common wear or breakage part. Compatible with...
    HKP-00254
    $14.95
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    $14.95
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  • New - HKP HK MP5 SD Handguard Conversion - HKP-22091 HK MP5, SP5 Handguard - SD Style Conversion
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    HK MP5, SP5 Handguard - SD Style Conversion

    HKP HK Parts

    $279.95
    HK Parts Handguard Conversion HK MP5SD Convert your standard MP5 to the iconic SD-style look with this HKP MP5SD handguard conversion. Designed for aesthetics only, this drop-in handguard gives your MP5 the suppressed MP5SD appearance without requiring...
    HKP-22091
    $279.95
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    $279.95
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  • Out Of Stock
    New - H&K MR556/MR762 A4 45 Degree Ambi Safety Lever - HKP-22034 HK MR556, MR762 A4 45 Degree Ambi Safety Lever

    HK MR556, MR762 A4 45 Degree Ambi Safety Lever

    H&K Heckler & Koch

    $52.00
    H&K MR556/MR762 A4 45 Degree Ambi Safety Lever Genuine H&K ambidextrous 45-degree safety lever for MR556 and MR762 A4 rifles. Includes: Right safety lever Left safety lever Safety lever clamping...
    HKP-22034
    $52.00
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    $52.00
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