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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HK416 Gas Block for 10.4" Barrels
H&K Heckler & Koch
$279.95Heckler and Koch HK German 10.4" Barrel Non-Vented Gas Block Complete Factory HK NON-VENTED 10.4" gas block.<HKP-01543$279.95 -
HK416, MR556 Barrel Nut - Titanium
HKP HK Parts
$99.95Titanium HK MR556, HK 416 Barrel Nut Or Socket For Barrel A must have repair and replacement part for removal or when you have any work done to your barrel as the barrel nut may become damaged in...HKP-17275$99.95 -
Out Of Stock
HK G36K Handguard - Quad Rail
B&T Brugger & Thomet
$329.95Swiss Made B&T Quad-Rail (4 Sided Picatinny Rail) Handguard For HK G36K Aluminum version with rail cover and sling swivel. The B&T offering is the finest railed hand guard available for the HK G36K...HKP-16895$329.95 -
HK UMP, USC, G36, SL8 Trigger
HDPS
$139.95HDPS US-Made Steel Trigger - USC & SL8 HDPS US-made triggers are ideal for meeting US 922r compliance as this counts as one of the needed parts when converting the HK USC to HK semi-auto UMP and the...HKP-02134$139.95 -
HK MP5 Locking Roller -6 - .40 S&W
HKP HK Parts
$11.95HK US MP540 Undersized Locking Roller, -6 The proper roller size is essential for headspacing the bolt gap correctly. Please Note: The price listed is per roller. Order 2 (pair) for a complete set...HKP-17566$11.95 -
HK91, G3 Adjustable Tactical Folding Stock
Choate
$139.95HK G3, 91 & PTR Tactical Folding Stock Each stock is adjustable from 14 1/4" to 15 1/4" using the included adjustable spacer system, which will allow a full 2" range in adjustment for the specific...HKP-00884$139.95 -
HK MP5, HK94, SP5 Trigger Pack - Flat Trigger - 9mm - 4 US Made 922r Parts
HKP HK Parts
$299.95HKP Zenith 9mm US Made Trigger Pack With Flat Trigger Semi auto trigger pack complete with flat trigger installed. Completely assembled & ready to drop in. The remaining parts are all German HK Or...HKP-18513$299.95 -
Out Of Stock
HK MP5, HK94K, SP89 Firing Pin
POF
$24.95HK Contract MP5, HK94 Firing Pin - POF Made from HK prints and tooling in the POF factory. The USA and German HK offering are a better offering with tighter tolerances and better materials...HKP-18264$24.95 -
Out Of Stock
HK Burst Roller Type Trip Lever - Latest Style
H&K Heckler & Koch
$99.95H&K Burst Roller Type Trip Lever - Latest Style Compatible With: 0,1,3,F 0,1,2,F 0,1,3 0,1,2HKP-01846$99.95 -
HK MP5, 90 Series Holder Plate for Locking Rollers
MKE
$29.95MKE Roller Retainer Plate for Rollers This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon...HKP-22235$29.95 -
Picatinny Sight Mount - RMR, Holosun
HKP HK Parts
$97.95HKP HK MP5/K RMR / Holosun Picatinny Sight Mount The HKP HK MP5/K RMR / Holosun Picatinny sight mount offers a secure, low-profile platform for RMR and Holosun optics. Compatible with any firearm...HKP-22068$97.95 -
HK21 Drum Hanger and100rd Drum
HKP HK Parts
$435.95HKP HK21 Drum Hanger with H&K 100 Round Drum Complete your HK21 or FMP21 build with our HKP drum hanger and H&K original 100-round drum. Our HK21 drum hanger is precisley machined from 4140 billet...HKP-21633$435.95