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 USP, Mark 23 Magazine Locking Plate - .45 ACP
H&K Heckler & Koch
$8.95HK Magazine Locking Plate For .45 Cal - 12 Round Magazines New HK German magazine locking plate. Compatible With: HK Mark 23 12 Round HK USP .45HKP-01588$8.95 -
HK45, HK45 Compact, USP, USP Compact LEM Cocking Piece Elbow Hammer Rebound Spring
H&K Heckler & Koch
$9.95HK LEM Cocking Piece Elbow Hammer Rebound Spring This item is a common wear and replacement item for those who have LEM triggers installed. Compatible With:HKP-02479$9.95 -
Out Of Stock
HK SP5K Mag Release Upgrade Kit - 9mm - Drop In Paddle
HKP HK Parts
$74.95HKP HK Parts Anti-Rattle Roller Tipped "Paddle" Magazine Release Install Kit for HK SP5K No modifications! No refinishing! Complete drop-in kit included. New USA made busing for a drop-in install...HKP-18192$74.95 -
HK MP5, MP5K Scope Tab - Weldment
HKP HK Parts
$9.95MP5, MP5K Sight Tab - Weldment HK MP5, MP5K 17-4 Stainless H900 rear sight tab. The most correct MP5, MP5K rear sight base available. If you want your build to look as factory correct as possible...HKP-17503$9.95 -
On Sale
HK USP, Mark 23 Magazine Extension Kit - .45 - +7
HKP HK Parts
$38.22 - $59.95HKP HK USP .45/MK23 - Magazine Extension Kit +7 HKP highly recommends using a magazine loader when loading ammunition into our extended magazines due to increased spring tension versus factory...HKP-21513-M$38.22 - $59.95 -
HK Lower Housing Clipping and Pinning Service - Polymer
HKP HK Parts
$99.95HK Clipped & Pinned Service - For Polymer Grip Frames We will clip and pin any "push pin" plastic housing for $99.95 each plus return shipping via USPS priority mail. Our technicians can perform the...HKP-00923$99.95 -
HK MP5, HK90 Series AR Stock or Brace Adapter
HKP HK Parts
$99.95HKP AR Brace/Stock Adapter To HK 90 Series Firearms For use on any commercial, mil-spec, or pistol AR15/M16/M4 stock, brace, & buffer tube of your choice. Perfect for your HK rifle, pistol, or SBR...HKP-16550$99.95 -
HK Selector Set - Enhanced Ambi - Contoured SEF
HKP HK Parts
$74.95Ambidextrous Selector Lever Set For Contoured SEF Polymer Grip Frames Features: Billet machined enhanced leftHKP-18257$74.95 -
HK CC9 MOD 1 Compensator
HKP HK Parts
$169.95HK Parts MOD 1 Compensator: H&K CC9 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...HKP-21831-M$169.95 -
On Sale
HK MP5, HK416 Barrel - .22LR - 16.1"
RCM
Now: $179.96Was: $199.95RCM .22LR Rifle Barrel for HK MP5 and HK416 This is the first and only offering of a replacement barrel for the HK .22LR platforms. Replacing the barrel previously required sending the receiver to...HKP-21407Now: $179.96Was: $199.95 -
HK MP5K, SP5K Trigger Housing - Universal SEF - Clipped and Pinned - USED
H&K Heckler & Koch
$99.95H&K Heckler and Koch SEF Universal Housing Clipped and Pinned - USED for HK MP5K HK SP5K Finally, a solution everyone was looking for. A one size fits all approach for the MP5K and SP5K style...HKP-21352$99.95 -
Out Of Stock
HK33 Wide Handguard Black - Surplus
H&K Heckler & Koch
$99.95HK 33 Wide Handguard Black - Surplus Surplus condition, with minor scratches and wear on the polymer exterior in very good shape overall. 11.5 inches long. The aluminum heat shielding is still...HKP-20132$99.95