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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HK91, G3, PTR Rear Sight Assembly
H&K Heckler & Koch
$39.95HK German G3, 91, PTR Rear Sight Assembly Complete - New HK - Hand Windage Adjustment Knob HK German factory rear sight assembly with all hardware included. We offer the finest new HK sights at the BEST price in the country. Each set comes complete with...HKP-19372$39.95 -
HK91, G3 Backplate and Recoil Rod Assembly, Complete
H&K Heckler & Koch
$24.95Heckler and Koch Complete Backplate and Recoil Rod Assembly for HK91 and HK G3 Used- Surplus- in good shape. Each backplate comes in the parkerized finished as issued to the German military complete and 100% serviceable. Ready to install. This is also a...HKP-16144$24.95 -
On Sale
HK VP9 Gen 2 V.2 Rail Mount Compensator
HKP HK Parts
Now: $52.46Was: $149.95HKP HK VP9 Gen 2 V.2 Rail Mount Compensator CLEARANCE COMPENSATORS ARE NOT AVAILABLE IN ANY COLORS ASIDE FROM WHAT IS PURCHASABLE ON THE WEBSITE. WE WILL NOT BE RUNNING THESE COMPENSATORS AGAIN SO IF THEY COLOR YOU WANT IS SOLD OUT, WE ARE SORRY...HKP-21141-MNow: $52.46Was: $149.95 -
HK VP9, VP9SK Cocking Aid Filler Left, Right Set
H&K Heckler & Koch
$19.95Cocking Aid Filler Piece Set For - HK VP9, VP9SK HK VP9/VP9SK Filler set replaces the cocking aids for a "flat" cocking area rather than raised cocking aids as comes standard on the HK VP9 pistol. These are a drop in part for the HK VP9 pistol. Brand new...HKP-17213$19.95 -
On Sale
HK MP5, HK90 Series F1 Flat Trigger
HKP HK Parts
Now: $39.95Was: $49.95HKP 90 Series F1 Flat Trigger With the utmost attention to detail in the design and manufacture of the HK Parts F1 flat 90 series trigger. Each F1 flat trigger will fit all 0,1 & SEF & Navy style trigger packs. Each trigger counts as one US...HKP-21537Now: $39.95Was: $49.95 -
Out Of Stock
HK Mark 23 Micro Comp - Threaded 16x1 RH
HKP HK Parts
$29.95HKP HK Mark 23 .45 ACP Micro Comp - Threaded 16x1 RH The HK Parts Micro Comp & Thread Protector is a lightweight, fully functional accessory that serves as both a compensator and thread protector. It attaches easily to any factory spec 16x1 RH Mark...HKP-21319$29.95 -
On Sale
Pistol Stabilizing Brace - SBA4
SB Tactical
Now: $105.95Was: $124.99SB Tactical SBA4 Pistol Stabilizing Brace Designed for all platforms capable of accepting a mil-spec carbine receiver extension. The SBA4 is 5-position adjustable and features an integral, ambidextrous QD sling socket. Compatible With: HK MR556...HKP-19927Now: $105.95Was: $124.99 -
On Sale
HK MP5K Bolt Group - Complete - 9mm - SA/FA
RCM
Now: $354.95Was: $394.95Complete Bolt Group - RCM - HK Style MP5K 9mm Ideal to replace out of spec, worn or broken bolt groups or for that custom build. Each bolt group is compatible with semi and full-auto MP5K 9mm style firearms. Each bolt group comes complete,...HKP-19846Now: $354.95Was: $394.95 -
Out Of Stock
HK P2000, USPC Magazine with Extension, Complete - 18 Round
HKP HK Parts / Heckler & Koch
$79.95HKP HK Parts and Heckler and Koch 13 Round Magazine with +5 Extension for HK P2000 and HK USPC HK P2000 +5 magazine extension coupled with a new full-size HK P2000, 13 round magazine. Each unit is then fully assembled as an 18 round HK P2000 magazine...HKP-18662-M$79.95 -
HK USP Jet Funnel Magazine Spring - 9mm, .40 S&W
H&K Heckler & Koch
$9.95Heckler and Koch Jet Funnel 9mm and .40 S&W for HK USP Magazine Spring Latest Production Longer, Stronger Spring for All HK Jet funnel Magazines. Limited supplies are available on this hard-to-find spring. Great replacement for all HK...HKP-02508$9.95 -
HK45 Magazine with Extension - 15 Round
HKP HK Parts / Heckler & Koch
$659.95HKP HK Parts and Heckler and Koch 15 Round Magazine for HK45 HK45 and HK45 tactical +5 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 15 round magazine. Ideal for competition shooters that...HKP-20788$659.95 -
Out Of Stock
HK USP, USP Compact Match Hammer
H&K Heckler & Koch
$103.95HK Match Hammer This is the factory-correct match hammer marked with the factory-correct "S" marking on the left-hand side of the hammer. Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W...HKP-02602$103.95