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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WOOX M-LOK Rail Covers - Checkered - GEN2
WOOX
$38.95 - $48.95WOOX Checkered GEN2 HK Rifle, SMG M-LOK Rail Covers The checkered GEN2 M-LOK rail covers upgrade any M-LOK or KeyMod handguard with a warmer feel, more traction, and added heat protection. The Checkered texture uses black nylon bushings and is...HKP-22463-M$38.95 - $48.95 -
HK416, MR556 QD Handguard - A4 Style - 10"
H&K Heckler & Koch
$497.95H&K HK416, MR556 A4 10" Quick Disconnect Handguard Factory HK A4 handguard featuring HK's A4 quick disconnect latch. Compatible with A1 and A4 rifles. Features: Quick disconnect latch for tool-free removal and installation 12 o'clock Picatinny...HKP-22426$497.95 -
Rail Panel Cover - M-LOK - 3 Slot
JMK
$18.95 - $23.95JMK Rail Panel Cover - M-LOK - 3 Slot JMK M-LOK rail panels are compatible with platforms featuring M-LOK slots. These modular panels are suited for numerous applications. Each panel is sold individually. M-LOK panels are CNC-machined from solid...HKP-22403-M$18.95 - $23.95 -
Arm Brace Hook
MI Midwest Industries
$97.95Midwest Industries Arm Brace Hook The Arm Brace Hook is designed for pistols that use a 1.2" diameter buffer tube. It provides a secure and stable point of contact while offering a built-in, ambidextrous QD sling interface. Specifications: Works...HKP-22417$97.95 -
HK51, PTR PDW MOE PR Stock
Magpul
$249.95Magpul HK51, PTR PDW MOE PR Stock - Black Designed for the PTR PDW platform, this adapter ensures a precise fit and secure lockup for stock installation. Features: Secure lockup for repeatable seating and zero retention High-strength aluminum...HKP-22347$249.95 -
B&T APC223, APC300, APC308 Stock or Brace Adapter - Picatinny
B&T Brugger & Thomet
$159.95B&T APC223/300/308 Stock Adapter - Picatinny This adapter allows the installation of picatinny-style stocks or braces onto B&T APC223, APC300, and APC308 platforms. Compatible With: B&T APC223/300/308HKP-22281$159.95 -
HK91, G3 Sniper Trigger Group - AC Unity Grip - Match Trigger
HKP HK Parts
$644.85HK Parts Trigger Group with AC Unity Grip and Match Trigger for HK91 and HK G3 The HK G3 and HK91 match trigger group combined with the AC Unity grip is a great choice for anyone seeking a tactical and aesthetically pleasing build. Featuring a robust...HKP-22251$644.85 -
HK P30L MOD 1 Insert Kit - Picatinny Rail and Smooth Plate
HKP HK Parts
$28.95HKP HK Parts HK P30L Rail and Plate Insert - Replacement MOD 1 Insert Kit Replacement Picatinny rail and smooth plate inserts with hardware for the MOD 1 compensator.HKP-22218$28.95 -
Out Of Stock
HK416 Upper Receiver Kit - 10.4" - Date Coded - OTB - USED
H&K Heckler & Koch
$3,789.95H&K 416 10.4" Date Coded OTB Upper Parts Kit - USED Genuine HK 416 10.4″ date coded used upper parts kit with a factory German 10.4″ barrel with the new Over The Beach (OTB) features (vented gas block, quad rail forearm). Finish...HKP-22193-M$3,789.95 -
HK MP5 Buttstock Fork
H&K Heckler & Koch
$199.95H&K HK MP5/SP5 Stock Fork MP5 Replacement Stock Fork Section, expertly crafted in Germany. This robust fixed stock section boasts a classic forked design that guarantees exceptional shoulder support and enhanced control for your pistol. Whether you...HKP-22166$199.95 -
On Sale
HK VP9, VP40 Competition Magwell Extension - Purple - BLEMISHED
HKP HK Parts
Now: $69.95Was: $129.95HKP HK VP9, VP40 Competition Magwell Extension - Purple - BLEMISHED Our 2-piece, steel insert competition VP9/VP40 extended flared magwell is CNC made from heat treated 4140 billet nitrided steel. The upper portion of the magwell is machined from...HKP-21079-PU-BNow: $69.95Was: $129.95 -
HK CC9 Firing Pin Safety
H&K Heckler & Koch
$18.95H&K CC9 Firing Pin Safety Made by H&K, the firing pin safety for the CC9 blocks firing pin movement until the trigger is pulled. Compatible With: HK CC9HKP-22133$18.95