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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Out Of Stock
HK91, G3 Barrel - 7.62 / .308 - 18" - Threaded 5/8x24
PTR
$214.95PTR HK G3/91 (7.62x51/.308) GI Barrel - Threaded 5/8x24 New PTR91 US made G.I. spec 18" barrel. Perfect for any barrel threaded 5/8x24. New production perfect for new builds. This part counts as one...HKP-18435$214.95 -
HK91, G3 Heavy Recoil Buffer
USA
$279.95HK Heavy Recoil Buffer For HK Style Firearms Made 100% in the USA by one of the best HK gunsmiths. Each unit is based on the original HK German 2-stage factory heavy buffer. Compatible With:HKP-01067$279.95 -
HK MP5K Parts Kit - 9mm - Pistol Build
HKP HK Parts
$1,889.95MP5K, MP5K-N Style Pistol Build Kit Complete The finest USA and German-made parts for a complete parts kit for an MP5K, MP5K-N pistol build. Each Kit Includes The Following HK Parts:HKP-02604$1,889.95 -
Out Of Stock
HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug
RCM
$149.95RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-LugHKP-01764$149.95 -
HK MP5, HK94, SP89, HK93 Grip For Metal Housing - Original Plastic
H&K Heckler & Koch
$49.99H&K 94 & SP89 Original Plastic Grip For Metal Housing This original plastic grip is designed for use with metal housing setups. Specifications:HKP-01423$49.99 -
HK MP5 Handguard with LED Weapon Light - TL99
B&T Brugger & Thomet
$649.95B&T Brugger & Thomet Model TL99 CREE LED Lit Handguard for HK MP5 and HK94 Models Each unit handguard is built with the integrated tactical LED light and 3 position switch. Specifications:HKP-16901$649.95 -
On Sale
CZ Scorpion Binary Trigger - Curved - BFSIII - BLEMISHED
FA Franklin Armory
Now: $262.49Was: $495.95Franklin Armory CZ Scorpion - BFSIII - Binary Trigger - Curved - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS AHKP-18881-BNow: $262.49Was: $495.95 -
HK MR556 A4 Handguard - 13.4"
H&K Heckler & Koch
$314.95H&K HK MR556 A4 13.4" Handguard This handguard is expertly engineered for precision and adaptability, featuring a robust Picatinny rail at the 12 o'clock position that guarantees seamless mounting of...HKP-21935$314.95 -
On Sale
HK33, HK53, HK93, HK91, G3 Flash Hider - Threaded 15x1 RH - USED - BLEMISHED
H&K Heckler & Koch
Now: $5.96Was: $15.95Heckler and Koch Flash Hider for (7.62/.308) & (5.56/.223) - 15x1 RH - USED - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL...HKP-00717-BNow: $5.96Was: $15.95 -
On Sale
HK UMP, USC 4 Piece M-LOK Set - Anodized
HKP HK Parts
Now: $74.96Was: $149.95HKP HK UMP/USC 4 Piece M-Lok Set - Anodized Upgrade your UMP and USC with the HK Parts 4-piece M-Lok set, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails...HKP-21663-MNow: $74.96Was: $149.95 -
On Sale
HK G36, HK SL8 Bolt Catch USF
USA
Now: $13.46Was: $14.95HK G36 & SL8 Bolt Catch On AR-15 systems this would be similar to a cam pin. Compatible With: G36, G36K, G36C Sl8 variantsHKP-19122Now: $13.46Was: $14.95 -
HK SL8 Complete Rear Sight
H&K Heckler & Koch
$99.95H&K HK SL8 Complete Rear Sight This item can be used on other applications as well as the SL8, G36 models.HKP-16354$99.95