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 - B&T HK MP5 Folding Stock with HK Parts Adapter - HKP-20216 HK MP5 Folding Stock with HK Parts Adapter
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    HK MP5 Folding Stock with HK Parts Adapter

    B&T Brugger & Thomet

    $277.95
    B&T Folding Stock for All MP5 Full Size Variants Swiss made B&T folding stock completely assembled With our own HK Parts stock adapter. CNC machined aircraft grade aluminum with QD sling attachment point.   Compatible With: MP5 (NOT...
    HKP-20216
    $277.95
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  • New - HDPS HK UMP (.45 ACP) Threaded Barrel - 16x1 LH - HKP-02634 HK UMP Barrel - .45 ACP - 7.87" - Threaded 16x1 LH
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    HK UMP Barrel - .45 ACP - 7.87" - Threaded 16x1 LH

    HDPS

    $349.95
    HK UMP & USC 45 ACP 8" Threaded Barrel HDPS UMP barrels are perfect for the USC to UMP conversions and a replacement UMP .45 barrel. They are considered by many to be the finest US-made barrel available. This barrel is the same length as a factory HK...
    HKP-02634
    $349.95
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  • New - Choate HK 91/G3 (7.62x51/.308) Complete Tactical Folding Stock - HKP-01951 HK91, G3 Complete Tactical Folding Stock
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    HK91, G3 Complete Tactical Folding Stock

    Choate

    $179.95
    HK91, G3, & PTR Folding Stock With Adjustable Length Of Pull - Tactical Stock This stock is adjustable by two inches when using the innovative spacer system. It comes fully assembled and ready to drop on your favorite HK. The adjustable length system...
    HKP-01951
    $179.95
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    New - H&K Barrel Retaining Pin - 5.15mm - HKP-01662 HK Barrel Retaining Pin - 5.15mm

    HK Barrel Retaining Pin - 5.15mm

    H&K Heckler & Koch

    $14.95
    H&K Barrel Retaining Pin - 5.15mm This is the barrel pin used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel in the trunnion. Each pin is slightly oversized for...
    HKP-01662
    $14.95
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  • New - HKP HK MP5 Raised Picatinny Optic Mount - HKP-21819 HK MP5 Optic Mount - Raised - Picatinny
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    HK MP5 Optic Mount - Raised - Picatinny

    HKP HK Parts

    $134.95
    HKP HK MP5 Raised Picatinny Optic Mount The HKP raised Picatinny optic mount was engineered for maximum versatility.  Unlike other optic mounts with an absolute or lower third cowitness, our mount provides an unobstructed view of the factory HK...
    HKP-21819-M
    $134.95
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  • New - HKP Single Point Leather & Cotton Sling - HKP-21321-M HK Single Point Leather & Cotton Sling
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    HK Single Point Leather & Cotton Sling

    HKP HK Parts

    $59.95
    Single Point Leather & Cotton Sling  Our leather sling utilizes two HK style sling hooks to attach to a single mounting point. Designed to replicate the original, out of production, German HK offering. Each sling is handcrafted in the US by a...
    HKP-21321-M
    $59.95
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  • Used - H&K German Leather Sling - Used-Very Good - HKP-20345 HK German Leather Sling - Used-Very Good
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    HK German Leather Sling - Used-Very Good

    H&K Heckler & Koch

    $59.95
    Original  Surplus German HK Leather 2 point sling - Used- Very Good Comes with HK sling hook. Pulled from German military G3 rifles. Complete and in good shape overall. Made with leather straps and steel hardware and HK sling hook. Last of the...
    HKP-20345
    $59.95
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  • New - HKP HK UMP .45 ACP Magazine Block - HKP-18171 HK UMP Magazine Block - .45 ACP - 25 to 10 Round Conversion
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    HK UMP Magazine Block - .45 ACP - 25 to 10 Round Conversion

    HKP HK Parts

    $9.95
    HKP HK UMP .45 ACP Magazine Block UMP mag block plug to limit the magazine capacity to 10 rounds for states with capacity restrictions. This is designed to use on the HK UMP .45 25 round magazine. Very easy to install & use. Compatible With: HK UMP ...
    HKP-18171
    $9.95
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  • New - H&K 33/91/G3 Triple Frame Front Sight Tower - HKP-18778 HK33, HK91, G3 Triple Frame Front Sight Tower
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    HK33, HK91, G3 Triple Frame Front Sight Tower

    H&K Heckler & Koch

    $19.95
    Front Sight Tower Triple Frame G3/33 - German G3 triple frame all steel factory German front sight tower. Perfect for HK builds as well as HK-AK style sight conversions and builds. Compatible With: HK G3 HK G3K HK 93 HK 33
    HKP-18778
    $19.95
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  • New - RCM HK 21E/23E (7.62x51/.308) & (5.56/.223) Locking Piece #9 - 40 Degree - HKP-02521 HK21E, HK23E Locking Piece #9 - 40 Degree
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    HK21E, HK23E Locking Piece #9 - 40 Degree

    RCM

    $49.95
    Locking Piece #9 - 40 Degree - US Made Compatible With: HK 21e HK 23e
    HKP-02521
    $49.95
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  • Out Of Stock
    HK MP5 Surefire Lighted Handguard - 328LMF HK MP5 Surefire Lighted Handguard - 328LMF

    HK MP5 Surefire Lighted Handguard - 328LMF

    Surefire

    $649.95
    Surefire - 328LMF - Lighted Handguard The SureFire 328LMF-B replaces the original handguard of your HK MP5, HK53, or HK94. Compact 3-volt (1-battery) system features a virtually indestructible LED emitter focused by a TIR lens, which produces a brilliant...
    HKP-17632
    $649.95
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  • New - H&K MP5 & MP5K 9mm Anti-Rattle Roller Tipped "Paddle" Magazine Release - HKP-00117 HK MP5, MP5K Magazine Release Paddle - Anti-Rattle Roller-Tip - 9mm
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    HK MP5, MP5K Magazine Release Paddle - Anti-Rattle Roller-Tip - 9mm

    H&K Heckler & Koch

    $64.95
    Heckler and Koch Anti-Rattle Roller Tipped "Paddle" Magazine Release for HK MP5, MP5K Factory German made Paddle mag release for all 9mm MP5, MP5K HK builds. Our parts are made by HK in Germany and are factory-fresh production. Compatible With: MP5,...
    HKP-00117
    $64.95
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