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 - H&K HK21E/23E Hammer & Strut Assembly - HKP-21855 HK21E, HK23E Hammer, Strut Assembly
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    HK21E, HK23E Hammer, Strut Assembly

    H&K Heckler & Koch

    $339.95
    H&K HK21E/23E Hammer & Strut Assembly This original HK hammer and pinned strut assembly is sourced directly from Germany, providing the correct replacement or perfect upgrade for your HK21E or HK23E. Most U.S. HK21E/23E-style firearms are...
    HKP-21855
    $339.95
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    $339.95
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  • On Sale
    New - SureFire 628 HK MP5 A17 Light Adapter - USED - HKP-99029 HK MP5 A17 Light Adapter - 628 - Yellow Light - USED
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    HK MP5 A17 Light Adapter - 628 - Yellow Light - USED

    Surefire

    Now: $489.95
    Was: $749.95
    SureFire 628 HK MP5 A17 Light Adapter - Yellow Light - USED The SureFire A17 MP5 light adapter offsets your weapon light to allow for suppressor use and mounts to the Surefire 628. The adjustment feature offers versatility in light positioning, and once...
    HKP-99029
    Now: $489.95
    Was: $749.95
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    Now: $489.95
    Was: $749.95
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  • Out Of Stock
    New - B&T Flash Hider - 5.56mm NATO, 1/2x28 - HKP-21757 HK416, MR556 Flash Hider - Threaded 1/2x28

    HK416, MR556 Flash Hider - Threaded 1/2x28

    B&T Brugger & Thomet

    $125.00
    B&T Brugger and Thomet's Flash Hider - for 5.56mm NATO caliber weapons threaded 1/2x28 Factory B&T 1/2x28 flash hider for 5.56 rifles.   Compatible With: HK 416 HK MR556 HK MR223 B&T APC223 AR-15 M16 5.56 / .223 firearms threaded...
    HKP-21757
    $125.00
    Out Of Stock
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    $125.00
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  • New - B&T HK MP5/SP5/G36 Helmet Stock Cheek Support - HKP-21684 HK MP5, SP5, G36 Helmet Stock Cheek Support
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    HK MP5, SP5, G36 Helmet Stock Cheek Support

    B&T Brugger & Thomet

    $168.00
    B&T Brugger and Thomet Helmet Stock Cheek Support for HK MP5, HK SP5, and HK G36 B&T cheek support for B&T helmet stocks. Compatible With: MP5, MP5K SP5, SP5K G36  
    HKP-21684
    $168.00
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    $168.00
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  • New - RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece - HKP-21524 HK MP5SD, MP5K Locking Piece - 120 Degree - .40 S&W, 10mm
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    HK MP5SD, MP5K Locking Piece - 120 Degree - .40 S&W, 10mm

    RCM

    $44.95
    RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece Compatible With:  MP5, MP5K  MP5SD 
    HKP-21524
    $44.95
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    $44.95
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  • New - B&T HK91, G3 (7.62x51/.308) Flash Hider for M.A.R.S Suppressor - Threaded 15x1 RH - HKP-21518 HK91, G3 Flash Hider for M.A.R.S Suppressor - Threaded 15x1 RH
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    HK91, G3 Flash Hider for M.A.R.S Suppressor - Threaded 15x1 RH

    B&T Brugger & Thomet

    $109.95
    B&T Brugger and Thomet Flash Hider for M.A.R.S Suppressor, Threaded 15x1 RH for HK91 and HK G3 7.62x51 / .308 Specifications: Made in Switzerland Threaded 15x1 RH Does not include face shims Compatible With: HK91, G3, PTR HK417, MR762 HK PSG1 7...
    HKP-21518
    $109.95
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    $109.95
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  • HK91, G3 Extractor - Used
HK91, G3 Extractor - Used
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    HK91, G3 Extractor - Used

    H&K Heckler & Koch

    $6.85
    HK German HK G3, HK, 91 & PTR 91 .308 Extractor - Used Surplus HK German extractor. Fits all models of HK G3 style firearms and CETME's. Compatible With: HKG3 HK91 PTR models Clones and other custom builds CETME & C308's
    HKP-21507
    $6.85
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    $6.85
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  • New - BETA C-Mag 100 Round HK G36 Mag System - HKP-21205-M HK G36 C-Mag System - 100 Round Drum
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    HK G36 C-Mag System - 100 Round Drum

    Beta C-Mag

    $839.95
    The Beta Company 100 Round Beta C-Mag Kit for HK G36 These drums are designed with clear back covers to enable you to see your round count. This magazine is the top-of-the-line package from The Beta Company. This works in any weapon...
    HKP-21205-M
    $839.95
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    $839.95
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  • Used - HK G3 - FMP Early Type Demilled Front End - HKP-20845 HK G3 - FMP Early Type Demilled Front End
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    HK G3 - FMP Early Type Demilled Front End

    FMP HK CONTRACT

    $99.95
    HK G3 - FMP Early Type Demilled Front End Early style G3 front end with no hanger. These are the perfect option for those doing custom builds. Good condition over all. Includes: Cocking tube Complete cocking handle assembly Trunnion Barrel pin
    HKP-20845
    $99.95
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  • On Sale
    New - TPM - Fluted Bolt Knob - Titanium - HKP-20769 Bolt Knob - Fluted - Titanium
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    Bolt Knob - Fluted - Titanium

    Tactical Precision MFG

    Now: $24.95
    Was: $48.99
    TPM - Fluted Bolt Knob - Titanium These bolt knobs can dress up any rifle with a 5/16×24 threaded bolt handle.  Features: Dimensions: 1.5" x 7/8" x 7/8" Weight: 2 oz. Material: titanium Threads: 5/16x24  
    HKP-20769
    Now: $24.95
    Was: $48.99
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    Now: $24.95
    Was: $48.99
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  • New - HDPS HK USC, UMP Stock Block C Eyelet / Thumb Screw - HKP-20688 HK USC, UMP Stock Block C Eyelet with Thumb Screw
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    HK USC, UMP Stock Block C Eyelet with Thumb Screw

    HDPS

    $169.95
    HDPS HK USC, UMP Stock Block C Eyelet / Thumb Screw Great option since factory HK UMP stocks are hard to find and expensive. The HDPS HK USC/UMP stock block "C." Each unit comes with eyelet / thumb screw design. This is the type for use with the ACE...
    HKP-20688
    $169.95
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    $169.95
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  • Used - H&K HK SL8-1 Complete Locking Lever - HKP-16375 HK SL8-1 Locking Lever - Complete
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    HK SL8-1 Locking Lever - Complete

    H&K Heckler & Koch

    $39.95
    H&K HK SL8-1 Complete Locking Lever Heckler & Koch USC & SL8-1 Complete Locking Lever is a top-tier, factory original component crafted from robust black polymer. This German-made part is specifically engineered for the HK SL8, USC, and UMP...
    HKP-16375
    $39.95
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    $39.95
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