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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HK416 A4, MR556 A5 Barrel Nut
H&K Heckler & Koch
$60.95H&K HK MR556 A4/HK416A5 Barrel Nut This precision-machined steel barrel nut is designed specifically for H&K’s MR556 A4 and HK416A5 rifles. It secures the barrel and supports the proprietary HK...HKP-21938$60.95 -
On Sale
HK G36 Picatinny Adapter
HKP HK Parts
Now: $82.84Was: $129.95HKP HK G36 Picatinny Adapter Transform your G36 with our unbeatable rail stock adapter, engineered to seamlessly attach any 1913 Style Stock or brace. Our innovative design ensures the 1913 stocks &...HKP-21665Now: $82.84Was: $129.95 -
Out Of Stock
B&T APC223, APC300 Buttplate - Telescopic Stock
B&T Brugger & Thomet
$136.00B&T Telescopic Stock Buttplate - Brace Conversion Factory B&T replacement buttplate for B&T APC rifle caliber telescoping stocks. Can also be used to upgrade a B&T brace to a stock. Compatible...HKP-21753$136.00 -
HK91, G3, HK417, MR762 Flash Hider - Suppressor Compatible - Threaded 5/8x24 RH
B&T Brugger & Thomet
$144.99Brugger and Thomet Suppressor Compatible Flash Hider Threaded 5/8x24 RH for 7.62x51 /.308 Firearms This flash hider is compatible with many suppressors. A perfect addition to any firearm...HKP-21395$144.99 -
On Sale
HK G3, M61 Barrel - 7.62 - 17.7" - Threaded 15x1 RH
RCM
Now: $219.96Was: $274.95RCM HK G3 & M61 (7.62x51/.308) Barrel - Threaded 15x1 RH Brand New Barrel for the Pre-G3 HK M61. The M61 was produced by H&K in Germany and has some aesthetic features that the final G3 rifles did...HKP-21353Now: $219.96Was: $274.95 -
On Sale
HK UMP Cocking Handle - Assembly
OMEGA
Now: $31.46Was: $34.95Omega USC/UMP Cocking Handle Assembly Omega UMP cocking handle assembly is a great complete replacement for broken or worn out cocking handle assemblies. Everything you need for a complete...HKP-21271Now: $31.46Was: $34.95 -
On Sale
Picatinny 8" Stock with 1913 Folding Mech
JMAC Customs
$232.43 - $304.90JMac 8" Stock with 0.275" Cheek Rise - 1913 Attachment Feautures: New Integrated Rubber Buttpad 2x Integrated QD Sling Socket 8" LHKP-21241-M$232.43 - $304.90 -
Out Of Stock
HK P7M13 13 Round Magazine - Excellent Condition - Rare
H&K Heckler & Koch
$467.95H&K HK P7M13 13-Round Magazine - Excellent/Like New Highly coveted 13-round 9mm P7M13 magazines with the sought-after LEO markings. Despite showing some signs of wear, these magazines are in perfect...HKP-21043$467.95 -
HK SL8, G36, Sight Rail - Flip Up Sights
H&K Heckler & Koch
$598.95HK Heckler and Koch Aluminum Sight Rail with Front and Rear Flip Up Sights for HK SL8, G36 New production German HK SL8, G36 picatinny rail with flip up front and rear sights. The latest production...HKP-17718$598.95 -
On Sale
HK VP9L Compensator - Quick Detach
HKP HK Parts
Now: $74.96Was: $169.95HK VP9L - Quick Detach Comp Weight ™ EASY ON, EASY OFF - QUICK DETACH TECHNOLOGY The HK Parts VP9L, Comp Weight™/compensator is the world's first quick detach Comp Weight™, compensator. That slides...HKP-19129Now: $74.96Was: $169.95 -
On Sale
B&T TP9, MP9, APC Magazine - 9mm - 15 Round - Translucent
B&T Brugger & Thomet
Now: $45.00Was: $50.00B&T 15 Round TP9/MP9/APC 9mm Magazine - Translucent Swiss B&T manufactured 15 round magazine for the 9mm TP9, MP9 & APC. Specifications:HKP-17437Now: $45.00Was: $50.00 -
HK G36 Backplate Complete with Recoil Assembly
H&K Heckler & Koch
$199.95HK G36 Backplate Complete With Recoil Assembly New HK German G36 Backplate with new G36/SL8 recoil buffer and recoil assembly. This assembly does include the recoil rod retaining screw. This is a...HKP-16735$199.95