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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HK33, HK53, HK93, HK91, G3 Bolt Locking Lever Axle Pin
H&K Heckler & Koch
$9.95HK Bolt Carrier Bolt Locking Lever Axle Pin - G3, 91, PTR & HK93, 33, 53 Brand new HK German bolt locking lever axle pin or cylinder pin for HK locking levers. Compatible With: G3, 91, PTR HK 93, 33, 53 HK21, 23, 11, 13 PSG1, MSG90HKP-17624$9.95 -
HK German Bayonet Adapter With Hardware
H&K Heckler & Koch
$159.95H&K German Bayonet Adapter With Hardware HK German Bayonet Adapter W/ Hardware made under a Turkish contract. The HK bayonet adapter replaces the cocking tube end cap (dust cap). Then the bayonet slides into the spring-loaded mechanism in the...HKP-00021$159.95 -
HK MP5 to AR Stock and Adapter
HKP HK Parts
$229.95HKP MP5 to AR Adapter & Stock Complete Each AR stock, brace adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct H buffers to protect your expensive firearm. This is the finest AR stock...HKP-17119$229.95 -
HK MP5 3 Position 0,1,F Navy Housing - Push Pin Housing
HKP HK Parts
$169.953 Position 0,1,F Navy Ambidextrous Grip Housing -USA MADE This housing is for push pin type receivers such as those found on AP5, Zenith Z-5RS models or POF full size MP5 models. This is a USA made offering that counts as 1 USA made compliant part...HKP-18196$169.95 -
Out Of Stock
HK MP5 3 Position (0,1,F Pictogram) Navy Housing - Push Pin
H&K Heckler & Koch
$324.95H&K MP5 3 Position (0,1,F Pictogram) Navy Housing - Push Pin This H&K grip housing is designed for MP5 models with push pin type receivers. Featuring the iconic Navy housing and 3 position pictogram (0,1,F), this housing provides reliable and...HKP-16065$324.95 -
HK G3 A2 Adjustable Stock Extension
USA
$69.95HK G3 A2 Adjustable Stock Extension Each stock extension is adjustable in 1/2" increments to enable you to achieve the proper length of trigger pull. This allows you a full 1.50" in length adjustments. These extensions are manufactured using high-impact,...HKP-00872$69.95 -
On Sale
HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1 - BLEMISHED
MKE
Now: $34.95Was: $49.95HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1 - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This contoured trigger housing is manufactured...HKP-99395Now: $34.95Was: $49.95 -
HK MP5SD Apparel - Hats, Patches, and Shirts
HKP HK Parts
$0.00HKP HK MP5SD Apparel and Patch Collection Represent your platform with the HK Parts MP5SD Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...HKP-22457-M$0.00 -
On Sale
HK VP9 Optic Plate #12 - Aimpoint ACRO P-1, P-2 - Red Dot Pistol Mount
USA
Now: $39.95Was: $59.95HK VP9 Optics Plate #12 - ACRO P-1 and P-2 Optic Mount The all-steel mounting solution for your HK VP9 Series Optic Ready model. Each plate is CNC machined from a solid billet of ordnance grade steel, deburred, tumbled and Cerakoted for the ultimate in...HKP-99339Now: $39.95Was: $59.95 -
HK VP9, VP40 Hybrid Trigger - Adjustable
Grayguns
$125.00HK VP9, VP40 Adjustable Hybrid Trigger The Adjustable Hybrid Trigger for the HK VP9 and VP40 Series fits the standard variants. The trigger features an over-travel adjustment while providing a 90-degree optimal trigger break. This...HKP-22343$125.00 -
HK VP9, VP40 Straight Trigger - Adjustable
Grayguns
$125.00Grayguns Adjustable Straight Trigger for HK VP9, VP40 Adjustable straight trigger for HK VP9 and VP40 standard variants. Features an over-travel adjustment and a 90-degree vertical wall for an optimal trigger break. The straight face allows a lower...HKP-22342$125.00 -
On Sale
HK MP5, HK90 Series Trigger Spring - SEF, Navy
MKE
Now: $2.45Was: $8.95MKE SEF & Navy 3 Position Trigger Spring The MKE trigger spring is an essential upgrade for anyone dealing with worn or broken trigger return springs in surplus trigger packs or as spares for all 90 series owners. These springs are fully compatible...HKP-22225Now: $2.45Was: $8.95