Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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Out Of Stock
HK91, G3 Complete FBI Trigger Group - Clipped & Pinned
H&K Heckler & Koch
$0.00HK91, HKG3, & HK51 FBI Trigger Group Complete - Clipped and Pinned Genuine HK German Parts. This housing will work fine with the .308 variants, even without the double tang.HKP-01029$0.00 -
Out Of Stock
HK91, G3 7.92mm Roller - (-8)
H&K Heckler & Koch
$0.00HK German Factory -8 Roller 7.92mm in size New HK German negative 8 (7.92mm) that is used for proper head spacing. Hard to find a factory HK roller in this size. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt...HKP-00346$0.00 -
Out Of Stock
HK91, G3, HK21E Locking Piece #17 - 36 Degree
H&K Heckler & Koch
$0.00Heckler and Koch German #17 Locking Piece - 36 Degree One of the best ways to slow down and tame that HK21). Can also be used for HK91/G3 special projects such as suppressors, & heavier than normal loads. This is also the factory correct locking...HKP-00581$0.00 -
Out Of Stock
HK91, G3 (.22LR) Extractor- German HK
H&K Heckler & Koch
$0.00HK German G3 .22 Caliber Conversion Extractor These are no longer in production and are hard to find. In many cases, the .22 conversion kits out there have old or worn-out extractors. Compatible With All Of The Factory HK .22 Kits: G3,...HKP-01530$0.00 -
Out Of Stock
HK91, G3 Bolt Group - Full Auto - Rhinemetall Carrier
H&K Heckler & Koch
$0.00German Rhinemetall G3, 91 F/A Bolt Group Complete Each Bolt group includes the following factory HK parts: Complete Bolt Head Assembled (extractor, extractor spring, roller retainer plate and rollers) >Firing pin >Firing pin spring >HK91/G3...HKP-00357$0.00 -
Out Of Stock
HK91, G3 Clubfoot Stock
H&K Heckler & Koch
$0.00HK G3, 91, PTR-91 Or Clone Club Foot Stock HK clubfoot stock comes fully assembled with all German Heckler & Koch Genuine parts. Compatible With: HK 91 HK G3 PTR-91, 32 Rifles HK .308 Rifles Other custom HK builds or clone builds. Each HK Clubfoot...HKP-01456$0.00 -
Out Of Stock
HK91, G3 Handguard - Wide - Horizontal Vented
H&K Heckler & Koch
$0.00New HK German HK 91, G3 Horizontal Vented Wide Black Forearm / Handguard HK91,G3, PTR 18" barreled forearm with vents to provide extra cooling. New factory fresh production and German HK.HKP-02101$0.00 -
Out Of Stock
HK91, G3 Heavy Recoil Buffer
$199.95HK Heavy Recoil Buffer For HK Style Firearms Made 100% in the USA by one of the best HK gunsmiths. Each unit is based on the original HK German 2-stage factory heavy buffer. Compatible With: HK 91, G3, PTR SAR-3/8, FMP, Vector, SR9, PTR PDW, V51,...HKP-01067$199.95 -
Out Of Stock
HK91, G3 Trigger Group - 3 Position - Navy Housing
HKP HK Parts
$579.95G3, 91, PTR Trigger Group 3 Position Navy Housing Introducing a cost-effective alternative to the high-priced and rare all-German HK FBI or 0,1 ambidextrous trigger groups. This semi-auto trigger group is available in a 3-position Navy factory German HK...HKP-17242$579.95 -
Out Of Stock
HK91, G3 3 Position Navy Trigger Group - Double Tang
H&K Heckler & Koch
$0.00H&K 91/G3 (7.62x51/.308) 3 Position Navy Trigger Group - Double Tang HK German G3, 91 3-Position Navy Trigger Group - Double Tang New Heckler & Koch German Manufacturer. Black Polymer Ambidextrous Housing With Selector Levers. Double Tang 3...HKP-01709$0.00 -
Out Of Stock
HK53 Trigger Group 0,1,2 - Push Pin
H&K Heckler & Koch
$0.00HK 53 .223 Trigger Group (0,1,2) - Push PinHKP-02027$0.00 -
Out Of Stock
HK MSG90 Trigger Group Complete - Clipped and Pinned - Ready to Install
H&K Heckler & Koch
$0.00HMSG90 Trigger Group Complete Clipped & Pinned Ready To Install A perfect addition to your HK G3/91 & PTR 7.62x51/.308 rifles, this is the best 3lb factory trigger money can buy. It offers the best factory trigger pull available for your HK rifle...HKP-00224$0.00