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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HK45 +5 Enhanced Magazine Extension Kit
HKP HK Parts
$64.95HKP HK45 +5 Magazine Extension Kit HK Parts magazine extension +5 kit adds 5 additional rounds to the HK45 magazine with the simple swap of the floor plate & high-reliability mag spring. Ideal for competitive shooters, concealed carry, or range day...HKP-21444-M$64.95 -
B&T APC Stock or Brace Adapter - Telescopic
B&T Brugger & Thomet
$94.95B&T APC9/APC45/APC223/APC300 Telescopic Brace/Stock Adapter Swiss made B&T brace adapter for the APC9/APC45/APC223/ACP300 telescopic stock. Adapter replaces the buttpad on the BT-20394 and BT-20407 APC telescopic stocks and allows the attachment...HKP-19860$94.95 -
Out Of Stock
HK G36 Magwell
H&K Heckler & Koch
$79.95H&K HK G36 Magwell - Black Factory German G36 magwell. Great for a replacement component or a critical piece of the puzzle when converting an SL8 to a G36. Compatible with factory HK and Magpul G36 magazines alike. Compatible With: HK...HKP-00625$79.95 -
HKP Shirt - Long Sleeve - OD Green
HKP HK Parts
$19.95HKP Long Sleeve Shirt - OD Green Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this shirt is certain to catch an eye at the range! Features: Unisex fit Fine cotton High fidelity DTG...HKP-21025-M$19.95 -
HKP 20 Round HK VP9, HK P30 9mm Complete Magazine - Red
HKP HK Parts / Heckler & Koch
$79.95HKP 20 Round HK VP9, HK P30 9mm Complete Magazine - Red HK Parts +5 Gen 2 magazine extension coupled with a 15 round factory German magazine body & red follower that adds 5 additional rounds total for a full assembled 20 round HK VP9/P30 magazine...HKP-18548$79.95 -
HK VP9, VP9SK, HK VP40 Disconnector
H&K Heckler & Koch
$19.95Disconnector For HK VP9, VP40 Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40HKP-16793$19.95 -
HK417 MR762, G28 Ambidextrous Sling Adapter
H&K Heckler & Koch
$129.95H&K HK MR762/417/G28 Ambidextrous Sling Adapter HK German manufactured MR762, MR308 & HK 417 Sling Adapter Backplate. This backplate has ambidextrous sling attachment points for both the left and right side of the firearm. Compatible With: HK...HKP-16994$129.95 -
HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded 14.5x1 LH
RCM
$225.00RCM HK USP .40 S&W Tactical Barrel - Threaded 14.5x1 LH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest replacement barrel for the HK USP full-size .40...HKP-17745$225.00 -
HK VP9, P30, HK45 Factory Rear Sight
H&K Heckler & Koch
$59.95HK Factory Rear Sight Compatible With: VP9, VP9SK, VP40 (Excludes OR Slides) HK45 HK45 Compact HK P30 9mm HK P30 40 HK P30L 9mm HK P30L 40 Please Note: Will not fit VP9 Optic Ready (OR) series of pistols.HKP-02161$59.95 -
HK MR556/CR556/MR762 H-Key 8 Rail Segment
HKP HK Parts
$29.95HK MR556, CR556 & MR762 HKey Rail Segment - 8 Slot 8 slot picatinny rail segment for the new "HKey" style forearms. This rail section is designed to fit and attach to any of the new HKey style forearms now being shipped on the MR556, CR556, MR762 and...HKP-17844$29.95 -
HK G36, SL8 Extractor Axle - USA
USA
$6.95HK G36, SL8 Extractor Axle- US Made New extractor axle for use on all G36, SL8 bolt heads. This part can become heavily worn and is prone to breakage. Compatible With: HK G36 models HK SL8 modelsHKP-18370$6.95 -
On Sale
Micro Compensator - Vertical Slot -Threaded 13.5x1 LH - 9mm
HKP HK Parts
Now: $19.95Was: $29.95HKP VP9 Vertical Slot Micro Comp - Threaded 13.5x1 LH The HK Parts micro comp & thread protector strikes a balance between a lightweight, minimalistic design and range functionality. The micro comp easily threads on to the end of any factory spec 13...HKP-22065Now: $19.95Was: $29.95