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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On Sale
HK VP9SK, P30SK Magazine Extension Kit - +5
HKP HK Parts
Now: $31.95Was: $39.95HKP +5 HK VP9SK/P30SK Magazine Extension Kit Adds 5 additional rounds to the HK VP9SK/P30SK 10 Round magazine with the simple swap of the floor plate & high reliability mag spring. This is an easy 2 min. swap. No gunsmithing needed. Ultra low...HKP-18494Now: $31.95Was: $39.95 -
Out Of Stock
HK416 E1, MR556 Charging Handle - Ambidextrous
H&K Heckler & Koch
$129.95H&K HK MR556/416 E1 Charging Handle - Ambidextrous HK's design boasts a smooth & easy to release latch with an enhanced oversized charging handle. Compatible With: HK MR556 HK 416 Other AR15, M4 & M16 applicationsHKP-01959$129.95 -
On Sale
HK MP5 Optic Mount - Raised - Picatinny
HKP HK Parts
Now: $107.95Was: $134.95HKP HK MP5 Raised Picatinny Optic Mount The HKP raised Picatinny optic mount was engineered for maximum versatility. Unlike other optic mounts with an absolute or lower third cowitness, our mount provides an unobstructed view of the factory HK...HKP-21819-MNow: $107.95Was: $134.95 -
On Sale
HK VP9 Railok™ Compensator
HKP HK Parts
Now: $129.95Was: $189.95HK Parts Railok™ Mounting System Compensator: H&K VP9 The HK Parts Railok™ mounting system compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip and recoil,...HKP-21111Now: $129.95Was: $189.95 -
HK German Leather Sling - Used - Excellent
H&K Heckler & Koch
$79.95Original Surplus German HK Leather 2 point sling - Used- Excellent Comes with HK sling hook. Pulled from German military G3 rifles. Complete and in excellent shape overall. Made with leather straps and steel hardware and HK sling hook. Last of...HKP-20347$79.95 -
On Sale
Muzzle Brake Compensator - Threaded 15x1 RH - 5.56 / .223, 7.62 / .308
HKP HK Parts
Now: $23.95Was: $29.95HKP HK Parts 5.56 / .223 and 7.62 / .308 Muzzle Brake Compensator, Threaded 15x1 RH This compensator is perfect for any 15x1 RH Barrel. Specifications: Threaded 15x1 RH Compatible With: HK91, G3, PTR HK33, HK53, HK93 MR223 HK416, MR556 HK417,...HKP-19738Now: $23.95Was: $29.95 -
On Sale
HK P2000SK Magazine - 9 Round - .40 S&W & .357 Sig
H&K Heckler & Koch
Now: $39.95Was: $49.00HK P2000SK 9 Round Magazine - .40 S&W and .357 Sig This magazine holds 9 rounds of .40 S&W ammunition with a flat floorplate. Great magazine for concealed carry use. Compatible With: P2000SK .40 P2000SK .357 SigHKP-02489Now: $39.95Was: $49.00 -
HK45, USP, USP Tactical Recoil Spring
H&K Heckler & Koch
$13.95HK 45/USP/Tactical Recoil Spring New HK Factory recoil spring (Factory 14lb) for USP 45 full size. Compatible With: HK USP 45 HK 45 Tactical HK 45 Elite, Expert Works as a slightly heavier recoil spring for the USP 9mm & .40 pistols (12.5 lb...HKP-01982$13.95 -
HK416, MR556, HK417, MR762 Rail Cover Set
H&K Heckler & Koch
$69.95H&K HK MR556/MR762/416/417 Rail Cover Set Brand new Heckler & Koch Picatinny rail covers made of high impact HK polymer. Each rail is equipped with a quick release tab & marked with the HK logo. Specifications: Length: 8...HKP-17704$69.95 -
On Sale
B&T Sling Swivel - Universal Picatinny Attachment
B&T Brugger & Thomet
Now: $13.95Was: $15.95B&T Sling Swivel - Universal Picatinny Attachment Designed for H&K snap-hooks, and mounts to any M1913 Picatinny Rail. Strong non-marring silent attachment point. Specifications: Color: Black Height max: 16.3 mm Length max: 12...HKP-16893Now: $13.95Was: $15.95 -
On Sale
HK MP5 Stock or Brace Adapter - AR - BLEMISHED
HKP HK Parts
Now: $54.65Was: $114.95HKP MP5 AR Brace/Stock Adapter - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each AR stock, brace adapter is made from a solid billet...HKP-17118-BNow: $54.65Was: $114.95 -
On Sale
HK UMP Magazine Block - .45 ACP - 25 to 10 Round Conversion
HKP HK Parts
Now: $7.95Was: $9.95HKP HK UMP .45 ACP Magazine Block UMP mag block plug to limit the magazine capacity to 10 rounds for states with capacity restrictions. This is designed to use on the HK UMP .45 25 round magazine. Very easy to install & use. Compatible With: HK UMP ...HKP-18171Now: $7.95Was: $9.95