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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Kaw Valley Precision 9mm Mach 3-Lug Mount
Kaw Valley Precision
$89.99Kaw Valley Precision 9mm Mach 3-Lug Mount The Kaw Valley Precision MACH 3-Lug Mount is a fully captured, enclosed system designed for use with the KVP MACH Linear Comp system. By utilizing 1-1/8"x28 TPI threads, the MACH 3-Lug Mount will fit many common...HKP-19995$89.99 -
HK MP5K Vertical Foregrip - M-LOK Cantilever Rail - US
HKP HK Parts
$69.95HKP HK MP5K Magpul VFG w/Cantilever M-LOK Rail New VFG for the MP5K platform is now M-LOK compatible and comes pre attached with a Magpul M-LOK polymer cantilever rail. The perfect combination to install lights or lasers. M-LOK slots are integrated on...HKP-20738$69.95 -
HK P30, P2000 Combat Defensive Action Upgrade For LEM 4.1 Pistols
H&K Heckler & Koch
$89.95H&K HK P Series Combat Defensive Action Upgrade For LEM 4.1 Pistols Found on all (European CDA) variant 4.1 models. This drop in LEM upgrade kit is a great trigger upgrade that reduces the trigger pre-travel by about 5mm or 1/3 of the original...HKP-17647$89.95 -
Out Of Stock
HK VP9, USPC, P Series Magazine Housing - 15 Round
H&K Heckler & Koch
$29.95H&K 15 Round HK VP9/USPC/P Series Magazine Housing Brand new HK German factory magazine body for the 15 round 9mm magazine. Will also work with the 17 round and 20 round magazine components. This mag body is marked with the 1-15 round witness holes...HKP-16655$29.95 -
HK MP5, HK90 Series Push Pin Spring
USA
$1.95Replacement Spring for HK style push pin - Small A must have replacement item to have on hand. A quick and easy install spring to get your push pins back to working condition. A great replacement for those worn-out springs that come loose while in...HKP-20368$1.95 -
HK USP, Mark 23 Enhanced Magazine Extension Kit - .45 ACP - +5
HKP HK Parts
$49.95HKP HK USP .45 ACP/Mark 23 Enhanced Magazine Extension Kit +5 HK Parts USP .45/Mark 23 enhanced +5 magazine extension. Our design represents a symbiotic balance of form and function. The added grooves enhance dexterity during those quick mag swaps while...HKP-21458-M$49.95 -
HK MP5, HK90 Series Ejector Axle Spring Ring - SEF, Ambi
USA
$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. Replacement of the retaining spring clip is necessary to keep...HKP-20629$1.95 -
HK Standard Stock Buttpad - OD Green - Surplus
H&K Heckler & Koch
$2.95H&K Standard Stock Buttpad - OD Green - Surplus HK German manufactured surplus A2 style stock buttpad in dark OD green. Used in fair condition. Compatible With: G3 & HK91HKP-17364$2.95 -
HK G36C Parts Kit
HKP HK Parts
$1,499.95HKP G36C Parts Kit HK Parts brings you a complete G36 parts kit, loaded out with everything you need to complete a stripped receiver. Our parts kits will have the highest quality parts for ultimate reliability. Guaranteed to be the most...HKP-21492$1,499.95 -
HKP 12 Round HK45C, HK USPC .45 ACP Magazine
HKP HK Parts
$79.95HKP 12 Round HK45C, HK USPC .45 ACP Magazine HK Parts magazine extension +4 adds 4 additional rounds to the HK45C, 8 round magazine. Each unit is then fully assembled as a 12 round HK45C magazine. Ideal for competitive shooters, concealed carry or for...HKP-18672$79.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Pistol Grip with Storage - Black
H&K Heckler & Koch
$49.95Heckler and Koch's Pistol Grip with Storage for HK416, HK MR556, HK417, HK MR762 New HK German factory battle grip with a storage compartment in the bottom. Each grip will fit all AR-15 and M-16 lower receivers as well. It has a superior fit and feel to...HKP-00033$49.95 -
HK Picatinny Rail For HK Receivers - 17 Slot
HKP HK Parts
$69.95HKP Picatinny Rail For HK Receivers - 17 Slot Mil-Spec all steel Picatinny rail in the white. Relief cut for HK receivers and made for mounting scopes and optics to HK builds. This unit easily welds to the top of your HK receiver. Compatible With: HK...HKP-01446$69.95