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 Magazine - 20 Round - Steel - Surplus
H&K Heckler & Koch
$19.95H&K 91/G3/MSG90 (7.62x51/.308) 20 Round Magazine - Steel - Surplus: HK German 20 Round Steel Magazine Used - Surplus Condition Used German manufacture all steel magazine. They range from Fair to VG...HKP-17696$19.95 -
On Sale
HK MP5K Handguard - 9mm - M-LOK
UTG PRO
$170.96 - $179.06UTG PRO HK MP5K Handguard - 9mm - M-Lok with Picatinny Receiver Extension The new UTG PRO MP5K MLOK handguard with picatinny receiver extension is incredible. This thing is stunning! The...HKP-21151-M$170.96 - $179.06 -
HK USP, USPC .45 Match Hammer Spring
H&K Heckler & Koch
$5.95HK USP, USPC, & HK45 Match Hammer Spring The match hammer spring is also known as the USPC standard hammer spring. This is also the correct spring needed for the light, TGS, and LEM conversion for...HKP-01410$5.95 -
HK USP, VP9 Barrel O-Ring - 9mm
H&K Heckler & Koch
$4.95HK German 9mm Barrel O-ring The O-ring is a high-wear and replacement item. To save money - order 10 or more and get an additional $1 off per O-ring. Compatible with: HK 9mm barrels with O-riHKP-00908$4.95 -
HK91, G3 Cocking Handle Axle Pin
H&K Heckler & Koch
$9.95New HK German G3, 91, 21, & PTR Cocking Handle Axle Pin This is a new HK factory part for the .308 HK rifle. This part is the axle pin that holds the cocking handle in place on the cocking tube...HKP-01690$9.95 -
On Sale
HK Single Point Sling - HK Style - Black
HKP HK Parts
Now: $27.97Was: $34.95HK Single Point Sling in Black This is a very nice sling for the money. It also has quick detach buckles that allow quick changes and removal. Specifications:HKP-02644Now: $27.97Was: $34.95 -
On Sale
Replacement Screw Set for Red Dot Sight - RMR
USA
Now: $1.56Was: $1.95Replacement Screw Set For Trijicon RMR Set of 2 6-32 x 1/2" flat head socket cap screws with thread locker. Requires a 2mm allen head key. Replacement or spare set to mount your Trijicon RMR optic...HKP-20035Now: $1.56Was: $1.95 -
Out Of Stock
HK VP9 Optic Plate #4 - DeltaPoint Pro, Eotech EFLX - Red Dot Pistol Mount
HKP HK Parts
$49.95HK VP9 Series Optics Plate#4 - Optic Mount - Leupold DeltaPoint Pro & Eotech EFLX - Steel The finest all steel mounting solution for your HK VP9 Series Opitc Ready model. New solid billet machined...HKP-19815$49.95 -
On Sale
HK MP5, HK90 Series Ejector Axle Spring Ring - SEF, Ambi
USA
Now: $1.61Was: $1.95Ejector Lever Axle Retaining Spring This is the perfect spring ring to replace your worn out ejector lever axle spring ring. Made to HK spec for the best US replacement part on the market...HKP-20629Now: $1.61Was: $1.95 -
HK GSG-5 Push Pin Upgrade Kit - .22LR
H&K Heckler & Koch
$29.95H&K GSG-5 Push Pin Upgrade Kit This item is a set of genuine HK German factory push pins that will upgrade all your GSG-5 rifles or pistols to quick take-down push pins. This is one of the most...HKP-01064$29.95 -
On Sale
HK91, G3 Improved Buffer System - Bill Springfield
Bill Springfield
Now: $63.97Was: $79.95HK Improved Buffer System - HK91 Bill Springfield developed a new piston and spring assembly that reduces the felt recoil up to 30% on any HK or clone utilizing the standard assembly. This piston is...HKP-19914Now: $63.97Was: $79.95 -
HK MP5 Fixed Stock
AC-Unity
$69.95AC-Unity HK MP5 Fixed Buttstock - Gen 2 with Removable Butt Pads The AC-Unity HK MP5 fixed buttstock delivers superior performance and comfort. Featuring soft, shock-absorbing rubber recoil pads, it...HKP-21640$69.95