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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  • HK 91/G3 Trigger Group with AC-Unity Grip Conversion Kit HKP HK Parts HKP-22322 HK 91/G3 Trigger Group with AC-Unity Grip Conversion Kit HKP HK Parts HKP-22322
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    HK91, G3 Metal Trigger Housing Conversion Kit - AC Unity Grip

    HKP HK Parts

    $189.95
    HK91, G3 Metal Trigger Housing Conversion Kit - AC Unity Grip This kit includes everything you need to convert a polymer HK91 or G3 trigger group a robust metal housing. Simply use your existing semi-auto SEF trigger pack to complete the conversion. This...
    HKP-22322
    $189.95
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  • New - MKE 90 Series Sear & Trigger Axle - HKP-22233 MKE 90 Series Sear & Trigger Axle MKE HKP-22233
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    HK90 Series Trigger and Catch Axle - USA

    MKE

    $1.99
    HK Sear and Trigger Axle For 90 Series - SURPLUS MKE sear and trigger axle for the 90 series style trigger packs. Each axle pin (aka pivot pin) measures .197 inches (5.0mm). Each HK trigger pack uses a total of 2 of these axle pins per trigger pack...
    HKP-22233
    $1.99
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    $1.99
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  • New - H&K/HKP Century Arms AP51 Fixed Stock Backplate - HKP-22188 Century Arms AP51 Fixed Stock Backplate
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    Century Arms AP51 Fixed Stock Backplate

    HKP HK Parts / Heckler & Koch

    $89.95
    H&K/HKP Century Arms AP51 Fixed Stock Backplate HKP's drop-in replacement backplate and recoil rod is expertly modified to fit the Century Arms AP51. Crafted to the precise length for optimal function and dependable performance, this backplate allows...
    HKP-22188
    $89.95
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  • On Sale
    New - HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special - HKP-99116 HK MP5 Locking Piece - 100 Degree - Standard Oversized - BLEMISHED - Gunsmith Special
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    HK MP5 Locking Piece - 100 Degree - Standard Oversized - BLEMISHED - Gunsmith Special

    USA

    Now: $9.95
    Was: $33.95
    HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special This US-made MP5 100 degree locking piece is the correct locking piece for all HK MP5-style forearms. This locking piece has also now become the factory correct locking...
    HKP-99116
    Now: $9.95
    Was: $33.95
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  • On Sale
    New - HK MP5K Carrier Weldment Tube - HKP-99062 HK MP5K Carrier Weldment Tube
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    HK MP5K Carrier Weldment Tube

    USA

    Now: $19.95
    Was: $44.95
    HK MP5K Carrier Weldment Tube The MP5K carrier weldment tube houses and supports the carrier assembly in the HK MP5K firearm.  Each tube ships raw/unfinished and is ready to weld into your build. Compatible With: HK MP5K THIS CLOSEOUT PART IS NOT...
    HKP-99062
    Now: $19.95
    Was: $44.95
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    Now: $19.95
    Was: $44.95
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  • New - HKP HK MP5K .40/10 Stock Adapter with Stock - HKP-21834 HK MP5K Stock with Direct Fit Adapter - .40 S&W, 10mm
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    HK MP5K Stock with Direct Fit Adapter - .40 S&W, 10mm

    HKP HK Parts

    $289.95
    HKP Stock with a Direct Fit Adapter HK MP5K .40 and 10mm  Designed to adapt UMP style and B&T folding stocks directly to the .40, 10mm K platform. Made in the USA and available exclusively at HK Parts Compatible With: HK MP5K .40, 10mm
    HKP-21834
    $289.95
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    $289.95
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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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  • New - H&K HK G36/SL8 Sling/Bipod Eye Bolt - HKP-21654 HK G36, SL8 Handguard Eye Bolt - Slings, Bipods
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    HK G36, SL8 Handguard Eye Bolt - Slings, Bipods

    H&K Heckler & Koch

    $79.95
    H&K HK G36/SL8 Sling/Bipod Eye Bolt Factory HK sling and bipod eye bolt for H&K G36 and SL8 rifle models.  Steel construction with a durable black finish.  Installs easily into the forward portion of the handguard to provide a secure...
    HKP-21654
    $79.95
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    $79.95
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  • New - HKP HK UMP 4 Prong Ported Flash Hider - HKP-21578 HK UMP 4 Prong Ported Flash Hider
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    HK UMP 4 Prong Ported Flash Hider

    HKP HK Parts

    $49.95
    HKP HK UMP 4 Prong Ported Flash Hider  4-prong UMP ported flash hider designed for our new UMP 45 parts kit. Not only does it protect exposed threads, it also enhances the appearance of your firearm while delivering flash suppression. Compatible...
    HKP-21578
    $49.95
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    $49.95
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  • New - FMP HK G3 Manual - HKP-21542 FMP HK G3 Manual
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    FMP HK G3 Manual

    $149.95
    FMP HK G3 Manual English-translated manuals for the Factory FMP G3 are available now. This is a rare collector's piece and the perfect item for those aiming to assemble a complete FMP G3 parts kit with an authentic factory manual. The cover is inscribed...
    HKP-21542
    $149.95
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    $149.95
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  • New - B&T G36 (5.56/.223) Flash Hider for M.A.R.S QD Suppressor - HKP-21522 HK G36 Flash Hider for M.A.R.S QD Suppressor
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    HK G36 Flash Hider for M.A.R.S QD Suppressor

    B&T Brugger & Thomet

    $144.99
    B&T G36 (5.56/.223) Flash Hider for M.A.R.S QD Suppressor Specifications: Made in Switzerland Threaded 15x1 RH Does not include face shims Compatible With: HK G36 5.56/.223 firearms threaded 15X1 RH Compatible with the Following Suppressors: M.A...
    HKP-21522
    $144.99
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    $144.99
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  • New - HKP HK MP5 Single Stage Semi Auto Trigger Pack - Ambi - HKP-21483 HK MP5 Trigger Pack - Single Stage Semi Auto - Ambi
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    HK MP5 Trigger Pack - Single Stage Semi Auto - Ambi

    HKP HK Parts

    $459.95
    HKP/H&K MP5 9mm Single Stage Semi-Auto Ambidextrous Trigger Pack This trigger pack starts as a factory F/A trigger pack before being converted into a semi-auto trigger pack and receiving single-stage trigger work. This is the best option for...
    HKP-21483
    $459.95
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    $459.95
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