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 MP5 Parts Kit - A3 Buttstock - .40 S&W, 10mm
H&K Heckler & Koch
$5,499.95HK MP5 40 S&W A3 German Parts Kit - Used Genuine German HK MP5 40 parts kit Barrel - 3 lugs & threaded, cold hammer forged Trigger Group - Ambidextrous FBI (0,1) pictogramHKP-00897$5,499.95 -
On Sale
HK MP5 German Parts Kit - .40 S&W - A2 Stock
HKP HK Parts
Now: $2,537.22Was: $3,979.95HK MP5 40 S&W A German Parts Kit - Used Includes: Barrel - 3 lugs, threaded, and cold hammer-forged Trigger Group - Ambidextrous Navy 0,1, F Trigger GroupHKP-00891Now: $2,537.22Was: $3,979.95 -
On Sale
HK MP5K, SP89 Trigger Group, Complete - Burst 4 Position - 9mm - Push Pin
H&K Heckler & Koch
Now: $2,789.95Was: $3,099.95HK Heckler and Koch Complete 9mm 4 Position Push Pin Trigger Group for HK MP5K and HK SP89 EachHKP-01498Now: $2,789.95Was: $3,099.95 -
Out Of Stock
HK MP5 Trigger Group - FBI Ambi 0,1 - 9mm
H&K Heckler & Koch
$0.00HK MP5 Push Pin 0,1 Trigger Group - GermanHKP-01731$0.00 -
HK MP5 Parts Kit - A3 Buttstock and SEF Lower - 9mm - 100% German
H&K Heckler & Koch
$2,799.95MP5 Parts Kit - 9mm HK German MP5 9mm Used Parts Kit Complete (Minus Receiver). All MP5 Kits Include: HK 3-Lug MP5 Barrel - cold hammer forged CHKP-00770$2,799.95 -
Out Of Stock
Shotgun Cleaning Kit
H&K Heckler & Koch
$49.95New Factory HK 12GA Shotgun Cleaning Kit This is the factory HK-approved and authorized cleaning kit. No longer available from HK. Each Cleaning Kit Comes With:HKP-02105$49.95 -
On Sale
HK UMP Lower Backplate - Enhanced
HKP HK Parts
Now: $69.26Was: $76.95HKP Enhanced Aluminum Lower Backplate for HK UMP - .45 ACP / .40 S&W The HKP enhanced lower backplate is designed for the HK UMP and comes with the buffer installed.HKP-23031Now: $69.26Was: $76.95 -
On Sale
HK416, MR556, G36 Gas Piston - Incomplete
H&K Heckler & Koch
Now: $43.18Was: $59.95Heckler and Koch HK416, MR556, G36 Incomplete Gas Piston INCOMPLETE This is a great spare part to have on hand, as the gas piston takes a lot of wear and tear. Compatible With: MR556, HK416HKP-99818Now: $43.18Was: $59.95On Sale
HK91, HK93 Rail - Tactical - 2" - Used
HKP HK Parts
Now: $12.80Was: $16.95HKP HK Parts 2" Tactical Rail for HK91, PTR 91, and the HK93 (with tactical grip) - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALLHKP-02527-USEDNow: $12.80Was: $16.95On Sale
HK USP, USP Compact Lock Out Key - USED
H&K Heckler & Koch
Now: $4.27Was: $5.95HK USP & USPC Lock Out Key - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOTHKP-01409-USEDNow: $4.27Was: $5.95
HK CC9 Complete Magazine - Extended Base Plate - 10 Round - 9mm
HKP HK Parts
$82.95HKP HK CC9 Complete 10 Round 9mm Magazine with an Extended Base Plate This magazine starts with a factory German 10-round CC9 magazine, then is expertly enhanced by HK Parts with an extended magazine...HKP-22911-M$82.95On Sale
HK MP5, MP5K Thread Protector - .40 S&W - Threaded 9/16x24
HKP HK Parts
Now: $17.96Was: $19.95HKP .40 S&W Thread Protector for MP5 and MP5K - Threaded 9/16x24 HKP steel thread protector for .40 S&W and 10mm barrels threaded 9/16x24. Precision machined to help protect barrel threads from...HKP-22885Now: $17.96Was: $19.95