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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HK21, HK21E, HK23E, HK11A1 Barrel Handle
Michaels Machines
$74.95HK 21, 21E, 23E, HK11 Barrel Handle US-made barrel handle. A great alternative for the original barrel handles that are no longer in production. Available in black or OD green and compatible with 5.56 and .308 platforms. Compatible...HKP-00244-M$74.95 -
HK91, G3 Fixed Stock with Enhanced Heavy Buffer - OD Green - Surplus
H&K Heckler & Koch
$129.95HK 91, G3 Fixed Stock with Enhanced Heavy Buffer Installed - OD Green - Surplus Used Olive Drab green German surplus stock complete with Enhance DMR buffer installed. Ready to drop in on your HK or clone rifle. Used in perfect working condition. Each...HKP-18932$129.95 -
Out Of Stock
HK91, G3 Extractor
PTR
$30.99PTR HK 91/G3 (7.62x51/.308) Extractor US Made by PTR. Made from stainless steel. Compatible With: HK G3 PTR 7.62 X 51mm modelsHKP-16222$30.99 -
HK MP5 Axle Rod and Pin, Bolt Hold Open - .40 S&W / 10mm
HKP HK Parts
$49.95HK MP5 40, MP5 10 Bolt Hold Open Axle Rod & Pin Combo Each bolt hold open rod axle includes the 2 pre-drilled holes for the threaded activation screw and the clamping sleeve. This offering includes both the axle rod and the threaded screw for the...HKP-17405$49.95 -
On Sale
AR-15 Magazine Lock Kit - California Legal
HKP HK Parts
Now: $7.95Was: $19.95HKP AR-15 California Legal Mag Lock KitHKP-15409Now: $7.95Was: $19.95 -
HK USP MOD 1 Compensator - 9mm / .40 ACP
HKP HK Parts
$179.95HK Parts MOD 1 Compensator: H&K USP 9/40 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 recoil, allowing you to get back on target...HKP-21905$179.95 -
Out Of Stock
HK VP40 Conversion Barrel - .40 S&W to 9mm - Threaded - 1/2x28
RCM
$214.95RCM HK VP40 to 9mm Conversion Barrel - Threaded - 1/2x28 This 9mm conversion barrel is a drop-in replacement that allows your VP40 to shoot the popular 9mm cartridge. It has the standard 1/2x28 thread and comes with a thread protector. Each barrel...HKP-21676$214.95 -
B&T MP9, TP9, APC9, SPC9, GHM9, KH9 Magazine - 20 Round - Improved Rubber Bumper
B&T Brugger & Thomet
$65.00B&T 20 Round Magazine 9mm with Improved Rubber Bumper The B&T factory 20 round magazine is designed for reliable performance in B&T firearms. Equipped with an upgraded rubber bumper for added durability and protection, it provides a secure...HKP-21714$65.00 -
On Sale
HK33 Cocking Tube - 11" - Right Hand
HKP HK Parts
Now: $74.95Was: $99.95HKP HK33 11" Right Hand Cocking Tube This is the one and only right handed cocking tube for the HK33 cocking tube made in the US. Made to the exact HK specifications as the factory HK33 German cocking tube. Overall length is 11".HKP-18692Now: $74.95Was: $99.95 -
HK91, G3 Stock - PRS Gen 3
Magpul
$429.95Magpul HK G3 / HK 91 PRS Gen 3 Stock - Available in Multiple Color Options The PRS GEN3 is a field precision stock for AR15/M16 and AR10/SR25 platforms, featuring tool-less length of pull and cheek piece height adjustment. With solid adjustments...HKP-21172-M$429.95 -
HK VP9 Optic Plate #1 - Noblex, Eotech, Meopta - Red Dot Pistol Mount
H&K Heckler & Koch
$54.95Mounting Plate #1 Noblex/Meopta - HK VP9, VP9L OR Models Brand new German manufacture steel optics plate. Compatible With: Meopta Meo Sight III EOTech MRDS Noblex Sight 3 HK VP9 OR, VP9 Tactical OR HK VP9L OR HK VP9 Match OR HK VP9SK OR HK VP9A1 K HK...HKP-19252$54.95 -
HK G36C Gas Piston Rod and Spring
H&K Heckler & Koch
$89.95HK German G36C Gas Piston Rod & Spring Assembly - Complete A must-have item for HK G36C conversions from G36 to SL8's or for spares for your G36C. New HK German factory OEM part. A high wear and replacement part and a must-have for spare parts.HKP-00353$89.95