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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HK MP5K Stock with Direct Fit Adapter - .40 S&W, 10mm
HKP HK Parts
$289.95HKP 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 USHKP-21834$289.95 -
HK53 Parts Kit - Like New
H&K Heckler & Koch
$13,484.95Heckler and Koch HK53 Parts Kit - Like New These HK53 kits are undoubtedly the most pristine kits we have ever come across. Some of these kits were only test fired at the factory. Each de-milled...HKP-21780$13,484.95 -
B&T APC Stock or Brace Adapter - Picatinny - 9mm, 10mm, .40 S&W, .45 ACP - No Hydraulic Buffer
B&T Brugger & Thomet
$160.00B&T Picatinny Brace and Stock Adapter - APC9, APC10, APC40, APC45 - Without Hydraulic Buffer The B&T alloy stock and brace adapter for the APC9, APC10, APC40, APC45 features a rear Picatinny...HKP-21759$160.00 -
Out Of Stock
HK21E, HK23E, PSG1, PTR Extractor
Michaels Machines
$275.95Michaels Machines HK21E, HK23E, PSG1, MSG90 Extractor Replacement extractor for HK21E, HK23E, PSG1, and MSG90 bolt heads. Extractors are a known wear item on these platforms and are no longer...HKP-21632$275.95 -
On Sale
HK UMP 5 Prong Ported Flash Hider - 5/8x24
HKP HK Parts
Now: $57.34Was: $89.95HKP HK UMP 5 Prong Ported Flash Hider - 5/8x24 5-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...HKP-21569Now: $57.34Was: $89.95 -
On Sale
FMP HK G3 Manual
Now: $134.96Was: $149.95FMP 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...HKP-21542Now: $134.96Was: $149.95 -
On Sale
HK MP5K Trigger Group - 9mm - Navy Style with AR Grip and Match Trigger
Magpul
Now: $519.95Was: $649.95Magpul HK MP5K AR 9mm Navy Style Match Trigger Group Our improved HK-AR Navy ambidextrous lower housing is now paired with our match trigger pack and a Magpul MOE grip to make this complete MP5K-AR...HKP-21378-MNow: $519.95Was: $649.95 -
On Sale
HK MP5 Brace Adapter - Folding
HKP HK Parts
Now: $95.59Was: $149.95HKP - HK MP5 Folding Brace Adapter The HK Parts brace adapter is precision-machined from a solid billet of aircraft-grade aluminum and features integrated QD sling attachment points. It is properly...HKP-21217Now: $95.59Was: $149.95 -
Out Of Stock
HK VP Series Curved Trigger Safety Tab Kit
Lazy Wolf
$19.95Lazy Wolf Guns C1 Curved Trigger Tab and Spring Set for the HK VP Series Replacement trigger safety tab, spring, and roll pin kit as pictured for the HK VP9 series of LWG triggers. Ideal if you...HKP-20083$19.95 -
HK SL8 Magwell - Used - Black
H&K Heckler & Koch
$9.95HK SL8 Magwell - Used - Black Used Magwell - Black - SL8HKP-20056$9.95 -
On Sale
HK VP9 Holster - Speed Cant Paddle
Comp-Tac
$44.59 - $69.95Comp-Tac HK VP9 Speed Cant Paddle Holster It's all-Kydex body provides a rigid material that is custom fit to each firearm and maintains its shape even with the pistol un-holstered. The smooth, low...HKP-20010-M$44.59 - $69.95 -
Out Of Stock
P90 Kit - Demilled Parts - 50 Round
FN
$3,149.95FN P90 Demilled Parts Kit Factory FN P90 F/A parts kit comes as pictured with all pieces less the actual receiver included one 50 round magazine. (Non FFL item as this is a parts kit)HKP-19639$3,149.95