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 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 -
HK MP7 Piston Ring
H&K Heckler & Koch
$9.95HK German MP7A1 Piston Ring For Gas Piston New HK German MP7 piston ring. A high wear & tear item. Works on all HK MP7 models. Each ring is sold individually. 3X are needed for each piston. We suggest ordering 3 and swapping them all at the same time.HKP-17426$9.95 -
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, SP5K Extractor - 9mm
MKE
Now: $17.95Was: $19.95MKE HK MP5/K 9mm Extractor Keep your MP5 or MP5K running strong with this MKE 9mm extractor. Perfect for replacing a worn part or completing a build, it’s made to HK specs for smooth, reliable performance you can count on. Compatible With: HK MP5,...HKP-21919Now: $17.95Was: $19.95 -
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 -
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 MP5K, SP5K Stock - 4 QD Rubber Buttpads
AC-Unity
Now: $66.95Was: $74.95AC-Unity HK MP5K, SP5K Stock with 4 Quick-Detach Rubber Buttpads Stock set for HK MP5K and SP5K pattern firearms with a quick-detach rubber buttstock pad setup. This setup offers a solid rear stock option while allowing fit preference changes with...HKP-22557Now: $66.95Was: $74.95