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 MP5K 3 Position Navy Ambi Housing Clipped & Pinned
H&K Heckler & Koch
$449.95HK German Ambidextrous, Pictogram Marked MP5K 3 Position Navy Housing Clipped & Pinned. New HK German. This HK German Navy housing Features ambidextrous functionality and pictogram markings. This housing is clipped & pinned for secure attachment...HKP-01033$449.95 -
On Sale
HK91, G3 Cocking Tube with Hanger - Ribbed - USED
H&K Heckler & Koch
Now: $27.95Was: $34.95HK German HK G3, HK91 Ribbed Cocking Tube With Hanger Installed - Used VARYING CONDITION SHOWN - SOLD INDIVIDUALLY DENTED. REFER TO PICTURES USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Used...HKP-00719-USEDNow: $27.95Was: $34.95 -
HK UMP, USC Front Sight - Omega
OMEGA
$9.95Omega UMP And USC Front Sight Front sight for HK UMP and HK USC Compatible With: UMP USCHKP-22513$9.95 -
Muzzle Brake - 5.56 and .308 - Threaded 5/8x24 RH
HKP HK Parts
$29.95HKP muzzle brake threaded 5/8x24 RH for 5.56/.223 and 7.62x51/.308 firearms This HKP muzzle brake is manufactured in the USA to HK specifications and is designed for use on 5.56 and .308 rifles. It features a partially milled birdcage-style design...HKP-22508$29.95 -
On Sale
HK G36, G36C, G36K Magwell - FDE - BLEMISHED
HKP HK Parts
Now: $28.95Was: $39.95HK G36, G36C, G36K Magwell - FDE - BLEMISHED SHADE OF COLOR MAY VARY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Allows use of all factory G36 and Magpul G36...HKP-19300-FDE-BNow: $28.95Was: $39.95 -
On Sale
HK MP5, MKE AP5 Bolt Head - Stripped - GUNSMITH SPECIAL
Other
Now: $69.95Was: $149.95Turkish Contract HK MP5, MKE AP5 Stripped Bolt Head - GUNSMITH SPECIAL VARYING CONDITION SHOWN - SOLD INDIVIDUALLY Please Note: Will require work before being functional. HKP recommends the work be performed by a professional gunsmith. The Condition will...HKP-99372Now: $69.95Was: $149.95 -
HK G36C Parts Kit with Rear Hinge Section - RARE
H&K Heckler & Koch
$5,495.95Heckler and Koch De-milled G36C Parts Kit with Rear Hinge Section - RARE Rare, original HK G36C de-milled parts kit with rear hinge receiver section. A true centerpiece for serious HK collectors and G36C enthusiasts. This is a one-time offering of...HKP-22486$5,495.95 -
HK MP5, MP5K Flash Hider for Tri-Lug Barrels - 1/2x28 - Taper Mount
JMAC Customs
$116.951/2x28 - Plan B Taper Mount Flash Hider for MP5 & MP5K This flash hider is specifically designed for use on MP5, MP5K, and clone firearms featuring the MP5-spec. tri-lug. The internal profile clears the front of the tri-lugs when installed...HKP-22407$116.95 -
M-LOK Rail Panel Cover - 2 Slot
JMK
$13.95 - $18.95JMK Rail Panel Cover - M-LOK - 2 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-22402-M$13.95 - $18.95 -
HK416, MR556 Handguard - 12.5" - M-LOK
H&K Heckler & Koch
$189.95H&K HK MR556/HK416 12.5" M-LOK Compatible Handguard Manufactured by HK from aircraft grade aluminum, this M-LOK handguard is designed for the Heckler & Koch MR556 & HK 416 rifles. This handguard showcases a 12.5" length and includes a...HKP-99321$189.95 -
HK MP5 Stock or Brace Adapter - A2 - .22LR
HKP HK Parts
$124.95HK MP5 .22LR A2 Stock Adapter The MP5 .22LR adapter provides a solid mounting interface to add an HK91/G3 A2 stock section. Features: Ambidextrous QD sling attachment points Easy installation with included hardware CNC machined from aircraft-grade...HKP-22326$124.95 -
HK USP Compensator - MOD 1 - Threaded Barrel
HKP HK Parts
$179.95HKP HK USP Tactical 9mm MOD 1 Compensator - Threaded The HK Parts MOD 1 compensator perfectly blends form and function, setting a new standard in muzzle control. Experience a significant reduction in muzzle flip and recoil, allowing you to get back on...HKP-22313$179.95