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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HK23, HK21, HK11, MG3 Ammunition Belt Starter Tab
H&K Heckler & Koch
$5.95H&K HK21/MG3 Ammo Belt Starter Tab - 7.62x51/.308 Starter tabs for HK21 and MG3 belt-fed rifles. Compatible With: HK 23/21/11HKP-21439$5.95 -
Out Of Stock
HK MP5, MP5K 9mm Cleaning Kit
HKP HK Parts / Heckler & Koch
$79.95HK MP5, HK SP5, HK94 & MP5K, SP89, SP5K cleaning kit complete Includes: Saf-T-Clad Cleaning Rod Accessory Adapter Section #8-32 Patch Holder HK Chamber Face Brush (Made in the USA) 9mm MP5 Barrel Flute Brush - MKE Contract Phosphor Bronze Bore...HKP-00347$79.95 -
HK VP9 Optic Plate #5 - Burris Fastfire, Vortex Viper, Venom - Red Dot Pistol Mount
HKP HK Parts
$29.95 - $39.95HKP/H&K VP9 Series 9mm Fastfire, Vortex Optics Plate #5 The finest aluminum mounting solution for your HK VP9 Series Optic Ready model. New solid billet machined aluminum optics plate. Each plate is CNC machined from a solid billet of ordnance grade...HKP-19689-M$29.95 - $39.95 -
HK MP5K Vertical Foregrip - M-LOK Cantilever Rail - US
HKP HK Parts
$69.95HKP HK MP5K Magpul VFG w/Cantilever M-LOK Rail New VFG for the MP5K platform is now M-LOK compatible and comes pre attached with a Magpul M-LOK polymer cantilever rail. The perfect combination to install lights or lasers. M-LOK slots are integrated on...HKP-20738$69.95 -
HK G3 Parts Kit - FMP
FMP HK CONTRACT
$159.95FMP - G3 Parts Kit - With Alloy Mag The G3 has been an iconic battle rifle utilized all over the world and revered as one of the best that H&K has offered. These kits are de-milled G3's that were licensed by H&K and manufactured in Portugal by...HKP-22531$159.95 -
HK VP9, P30 Magazine, Complete - 20 Round - 9mm
HKP HK Parts
$79.95 - $89.95HKP HK Parts Complete 9mm 20 Round Magazine for HK VP9 and HK P30 Each mag comes fully assembled and ready for use. HK Parts takes an existing 15 round magazine and the +5 mag extension and assembles them into a working 20 round magazine...HKP-21093-M$79.95 - $89.95 -
Out Of Stock
USA HK MP5 9mm Ejector Lever
PTR
$34.95Ejector Lever - HK MP5, 94 & MP5K, SP-89 - 9mm- USA HK 9mm ejector lever. Fits all of the HK 9mm variants, stamped, formed, heat treated, secondary machined & hardened. This USA made ejector is patterned after the latest generation German...HKP-19660$34.95 -
HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1, P-2
HKP HK Parts
$98.95HKP HK MP5, MP5K Aimpoint ACRO P1, P2 Optic Mount The HK Parts Aimpoint ACRO low-profile mount is perfect for shooters seeking a minimalistic mount with an absolute co-witness. Crafted in the US from aircraft grade aluminum and coated in...HKP-21229-M$98.95 -
HK MP5, HK90 Series Push Pin Spring
$1.95Replacement Spring for HK style push pin - Small A must have replacement item to have on hand. A quick and easy install spring to get your push pins back to working condition. A great replacement for those worn-out springs that come loose while in...HKP-20368$1.95 -
HK G36, SL8 Barrel Mandrel
Other
$109.95Barrel Mandrel For Removal and Installation of HK G36 and HK SL8 Barrels A mandrel barrel changing tool for firearms is a specialized rod inserted into the barrel to provide internal support and alignment during the process of removal or installation...HKP-02608$109.95 -
HK 9mm Thread Adapter - Barrel - Converts 13.5x1 To 1/2x28 LH
Kaw Valley Precision
$29.95Kaw Valley Precision 9mm Thread Adapter Converts your HK 9 mm Barrel from 13.5x1 LH To 1/2x28 Converts barrel thread pitches to match desired muzzle device thread pitches. For example, this adapter converts a 13.5x1 LH barrel thread to a 1/2x28 thread,...HKP-19991$29.95 -
Out Of Stock
HK UMP Micro Comp - Threaded .578x28 Right Hand
HKP HK Parts
$29.95HKP .45 ACP Micro Comp - Threaded .578x28 RH The HK Parts micro comp & thread protector is designed to be lightweight, and functional as both a compensator and thread protector. The HK Parts micro comp easily attaches to the end of any factory spec ...HKP-20212$29.95