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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  • Used - HKP MP5 9mm SEF Semi Trigger Pack - Match - HKP-17658 HK MP5 9mm SEF Semi Trigger Pack - Match
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    HK MP5 9mm SEF Semi Trigger Pack - Match

    HKP HK Parts

    $479.95
    HKP MP5 9mm SEF Semi Trigger Pack - Match We have one of the best HK gunsmiths in the country that is able to take hand picked German HK F/A trigger packs and modify them to semi-auto. This is done with the best and most precise machinery and jigs...
    HKP-17658
    $479.95
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    $479.95
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  • Used - H&K MP5/SP5K Rear Sight Set Complete-Used - HKP-00671
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    HK MP5, SP5K Rear Sight Set, Complete - Used

    H&K Heckler & Koch

    $109.95
    HK Heckler and Koch German Rear Sight Set Complete - Used for HK MP5 and HK94 Taken from demilled MP5's. Includes the entire rear sight assembly and hardware set for the complete rear sight assembly. In some cases, we have replaced the rear sight drum...
    HKP-00671
    $109.95
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  • Out Of Stock
    HK416, MR556 ARC-Fire with Geissele Trigger - 3-Position - Ambi Controls HK416, MR556 ARC-Fire with Geissele Trigger - 3-Position - Ambi Controls

    HK416, MR556 ARC-Fire with Geissele Trigger - 3-Position - Ambi Controls

    AS Designs

    $689.95
    HK416, MR556 A4 3-Position ARC-Fire with Geissele*** Trigger and Ambidextrous Controls AS Designs' ARC-Fire (Active Reset Clutch) trigger is an innovative take on forced reset triggers.  The trigger is reset immediately after each shot, resulting in...
    HKP-22435
    $689.95
    Out Of Stock
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    $689.95
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  • On Sale
    New - H&K 91/G3/MSG90 (7.62x51/.308) 10 Round Magazine - Steel - BLEMISHED - HKP-01607-B HK91, G3, PTR Magazine - 10 Round - Steel - BLEMISHED
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    HK91, G3, PTR Magazine - 10 Round - Steel - BLEMISHED

    H&K Heckler & Koch

    Now: $56.95
    Was: $89.95
    H&K 91/G3/MSG90 (7.62x51/.308) 10 Round Magazine - Steel - BLEMISHED MAGAZINE BODY HAS PITTING - CONDITION AND COLOR MAY VARY (see pictures) - Price is per unit. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT...
    HKP-01607-B
    Now: $56.95
    Was: $89.95
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    Now: $56.95
    Was: $89.95
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  • New - H&K MR556/416/MR762/417 A7 Adaptive Battle Grip w/ Tool - RAL8000 - HKP-21963 HK416, MR556, HK417, MR762 Pistol Grip - Tool Included - RAL8000
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    HK416, MR556, HK417, MR762 Pistol Grip - Tool Included - RAL8000

    H&K Heckler & Koch

    $149.95
    HK Heckler and Koch Adaptive Pistol Grip with tool in RAL8000. Factory German adaptive pistol grip in RAL8000. Originally used on the HK416 A7, this grip fits a variety of H&K platforms. Compatible With: HK MR556 A1 HK MR556 A4 HK416 HK MR762...
    HKP-21963
    $149.95
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    $149.95
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  • New - H&K 416 Front Takedown Pin - HKP-21862 HK416, MR556 Takedown Pin - Front - A4 Style
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    HK416, MR556 Takedown Pin - Front - A4 Style

    H&K Heckler & Koch

    $26.95
    H&K HK416, MR556 A4 Front Takedown Pin  The HK416 front takedown pin is a German-made component designed to securely fasten the upper and lower receivers. Precision-machined for a proper fit, it ensures reliable function and serves as an ideal...
    HKP-21862
    $26.95
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  • Out Of Stock
    New - RCM HK G3/91 Threaded Barrel - 5/8x24 - CHF - HKP-21838 HK91, G3 Barrel - 7.62x51 - 17.7" - Threaded 5/8x24

    HK91, G3 Barrel - 7.62x51 - 17.7" - Threaded 5/8x24

    RCM

    $264.99
    RCM HK G3/91 Threaded Barrel - 5/8x24-CHE Machined by RCM from a Mil-Spec 41V50 Hammer Forged Blank. These blanks are considered to be one of the finest made. 1:10 twist, Nitride finish. Perfect for that HK build or to replace that shot out barrel. Each...
    HKP-21838
    $264.99
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    $264.99
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  • New - HKP HK G36 Picatinny Adapter - HKP-21665 HK G36 Picatinny Adapter
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    HK G36 Picatinny Adapter

    HKP HK Parts

    $129.95
    HKP HK G36 Picatinny Adapter Transform your G36 with our unbeatable rail stock adapter, engineered to seamlessly attach any 1913 Style Stock or brace. Our innovative design ensures the 1913 stocks & braces lock in securely, offering superior cheek...
    HKP-21665
    $129.95
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  • New - B&T 15 Round TP9/MP9/APC 9mm Magazine - Translucent - HKP-17437 B&T TP9, MP9, APC Magazine - 9mm - 15 Round - Translucent
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    B&T TP9, MP9, APC Magazine - 9mm - 15 Round - Translucent

    B&T Brugger & Thomet

    $50.00
    B&T 15 Round TP9/MP9/APC 9mm Magazine - Translucent Swiss B&T manufactured 15 round magazine for the 9mm TP9, MP9 & APC. Specifications: 15-round capacity 9mm Made of high strength polymer Compatible With: B&T MP9/TP9 B&T...
    HKP-17437
    $50.00
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    $50.00
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  • New - SB Tactical HK91 SBA4 Pistol Stabilizing Brace & Adapter - HKP-19931 HK91 SBA4 Pistol Stabilizing Brace and Adapter
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    HK91 SBA4 Pistol Stabilizing Brace and Adapter

    SB Tactical

    $319.95
    SB Tactical HK91 SBA4 Pistol Stabilizing Brace & Adapter Includes: G3, HK91 backplate & recoil assembly AR, M4 stock adapter Complete buffer assembly Castle nut SB Tactical Brace Features: Made in the USA Designed after the SBM4 5-position...
    HKP-19931
    $319.95
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    $319.95
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  • New - RCM MP5 40, MP5 10mm Complete Bolt Group - HKP-19723 HK MP5 Bolt Group, Complete - .40 S&W, 10mm
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    HK MP5 Bolt Group, Complete - .40 S&W, 10mm

    HKP HK Parts

    $414.95
    RCM- MP5 40 & MP5 10mm - Bolt Group Complete Ideal to replace out of spec, worn, or broken bolt groups or for that custom build. Includes: RCM bolt head complete RCM locking piece RCM firing pin RCM firing pin spring RCM full auto bolt carrier...
    HKP-19723
    $414.95
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    $414.95
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  • New - HK MR556/416 DMR Extra Long Forearm - Black - HKP-17683 HK416, MR556 DMR Extra Long Handguard
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    HK416, MR556 DMR Extra Long Handguard

    H&K Heckler & Koch

    $859.95
    HK MR556/416 DMR Extra Long Forearm New Heckler & Koch MR556, HK 416 Extended DMR (designated marksman rifle) Forearm With Suppressor Window Cutout. Optimized design to mitigate the heat emissions for long range shooting and to prevent the mirage...
    HKP-17683
    $859.95
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    $859.95
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