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 MP5K/SP5K/SP89 Folding Stock Adapter - Black - HKP-20799 HK MP5K, SP5K, SP89 Folding Stock Adapter
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    HK MP5K, SP5K, SP89 Folding Stock Adapter

    HKP HK Parts

    $139.95
    HKP MP5K/SP5K/SP89 Folding Stock Adapter The HK Parts folding stock adapter is the best option to attach onto the UMP style stock or the B&T  folding stock. Will also work on any other stocks that utilizes the same mounting / folding system...
    HKP-20799
    $139.95
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  • New - Franklin Armory HK MP5-AR Binary Trigger Group - HKP-20642 HK MP5, HK94, SP5 Binary Trigger Group - Ambi - BFSIII -  9mm
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    HK MP5, HK94, SP5 Binary Trigger Group - Ambi - BFSIII - 9mm

    FA Franklin Armory

    $849.95
    Franklin Armory BFSIII HK-C1 - Trigger Group For  MP5, SP5 Our new and improved HK-AR Navy ambidextrous lower housing is now paired with Franklin Armory binary trigger pack and a Magpul MOE grip to make this complete MP5-AR style binary trigger...
    HKP-20642
    $849.95
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  • New - HKP HK UMP, G36 Selector Lever - HKP-20180 HK UMP, G36 Selector Lever
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    HK UMP, G36 Selector Lever

    HKP HK Parts

    $8.95
    HK UMP & G36 Left Side Safety Selector Lever With Axle - Replacement selector for HK PARTS TRIGGER GROUP HK Parts selector lever for the left side of our own 2 position FBI U.S housing for the UMP pictogram lowers. Compatible With: U.S FBI 2...
    HKP-20180
    $8.95
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  • New - GSG9 HK G36C Gas Piston Rod Spring Assembly - Black - HKP-18250 HK G36C Gas Piston Rod and Spring - Complete Assembly
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    HK G36C Gas Piston Rod and Spring - Complete Assembly

    GSG9

    $82.95
    HK German G36C Gas Piston Rod & Spring Assembly Complete A must have item for HK G36C conversions from SL8's or for spares for your G36C MG. A high wear and replacement part and a must have for spare parts.
    HKP-18250
    $82.95
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  • New - HKP HK MP5K QD End Cap with Buffer - Black - HKP-20117 HK MP5K QD End Cap with Buffer
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    HK MP5K QD End Cap with Buffer

    HKP HK Parts

    $44.95
    Quick Detach MP5K, SP-89 Steel End Cap With Replaceable Rubber Buffer Compatible With: MP5K SP89 Clone or other custom builds
    HKP-20117
    $44.95
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  • Out Of Stock
    New - Geissele HK MR556 Trigger - HKP-16464 HK416, MR556 2-Stage Trigger

    HK416, MR556 2-Stage Trigger

    Geissele

    $489.95
    Geissele Automatic's two stage trigger for the HK MR 556 rifle. The HK MR556 trigger is similar to Geissele's SSA with a 4.5 total pull weight. It can be used in both the HK 556 and semi-auto HK 416's. Each Trigger comes with full installation...
    HKP-16464
    $489.95
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  • HK UMP (9mm) 30 Round Magazine HK UMP (9mm) 30 Round Magazine
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    HK UMP (9mm) 30 Round Magazine

    H&K Heckler & Koch

    $62.95
    HK German UMP 9mm 30 Round Factory Magazine The latest HK German production 30-round magazine is new and hard to find. Compatible With: UMP 9mm USC 9mm conversions Omega 9mm UMP/USC builds
    HKP-00608
    $62.95
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  • New - HKP Tactical Rail - 6 Inch - HK91/93 - HKP-00831 HK91, G3 Tactical Rail - 6 Inch
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    HK91, G3 Tactical Rail - 6 Inch

    HKP HK Parts

    $24.95
    HKP Tactical Rail - 6 Inch The six mounting screws are also included with each rail. This rail will fit on either the left or right side or the bottom of the PTR and HK91/93 tactical handguards. Up to three rails can be used on each forearm. Compatible...
    HKP-00831
    $24.95
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  • New - HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant - HKP-12746 HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant
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    HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - 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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  • New - H&K Catch Lever Axle For Ambidextrous Trigger Packs - HKP-01552
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    HK90 Series Catch Lever Axle - Ambi Trigger Packs

    H&K Heckler & Koch

    $5.95
    H&K Catch Lever Axle For Ambidextrous Trigger Packs This is the axle that is found in all ambidextrous trigger packs for the 90 series that retains the catch lever assembly.
    HKP-01552
    $5.95
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  • New HKP HK Parts HK 9mm Barrel Flute Cleaning Brush HK MP5, SP5K Barrel Flute Brush - 9mm
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    HK MP5, SP5K Barrel Flute Brush - 9mm

    HKP HK Parts

    $22.95
    HKP HK Cleaning Brush - 9mm - Barrel Flute Short, flexible brush sized for cleaning 9mm fluted barrels. Designed to reach the grooves and remove fouling without damaging the flute edges. Compatible With: HK MP5/K HK SP5/K HK SP89 HK94 HK34 Clones and...
    HKP-22315
    $22.95
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  • New - HKP HK MP5/MP5K Raised Universal Optic Mount - HKP-22219-M HK MP5, MP5K Optic Mount - Raised - Picatinny
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    HK MP5, MP5K Optic Mount - Raised - Picatinny

    HKP HK Parts

    $164.95
    HKP HK MP5/MP5K Raised Universal Optic Mount The HKP Raised Picatinny Optic Mount is designed for maximum versatility, providing a true universal mounting solution for red dot optics.  Our optic mount utilizes the same footprint as the VP9 Optic...
    HKP-22219-M
    $164.95
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