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 USP Tactical Barrel - .45 ACP - 5.07" - Threaded 16x1 LH
H&K Heckler & Koch
$310.99H&K USP .45 ACP Tactical Barrel - Threaded 16x1 LH HK USP .45 ACP German factory threaded barrel for use with flash hiders or sound suppressors. This is a drop in barrel for any of the HK USP .45 ACP...HKP-00319$310.99 -
HK G36 Lower Housing - 2 Position 0,1 Pictogram
H&K Heckler & Koch
$549.95H&K G36 (5.56/.223) 2 Position (0,1 Pictogram) Lower Housing This lower housing is available without internals, a unique offering as G36 lowers previously only came as complete trigger groups with...HKP-01504$549.95 -
HK91, G3, PTR Bolt Carrier Locking Lever
H&K Heckler & Koch
$9.95Locking Lever - HK German G3 - New Old stock No longer made or offered by HK. This is the factory HK German manufactured bolt carrier locking lever. New never installed. These are the LAST new units...HKP-19485$9.95 -
HK MP5K, HK90 Series Sear Complete - Steel - Used Surplus
H&K Heckler & Koch
$12.95Heckler & Koch's Sear Catch Release - Complete for HKP 90, MP5K Trigger Packs - German - Used - Steel German HK Sear/Catch complete with installed detent, spring and roll pin. Used surplus in VG-EXC...HKP-18304$12.95 -
Out Of Stock
HK MP5, MP5K Paddle Mag Release Contact Piece - USA
HKP HK Parts
$15.95HKP HK Parts 9mm Contact Piece HK MP5 and HK MP5K Factory correct US manufactured MP5, MP5K 9mm Contact Piece for Paddle magazine release. Each part was made using the same material and...HKP-17403$15.95 -
HK MP5, SP5 Folding Brace - Skeletonized
SB Tactical
$149.95SB Tactical MP5 & SP5 Folding Brace - Skeletonized Features: Each brace comes assembled ready to install no assembly required Made in the USAHKP-21397$149.95 -
Out Of Stock
HK MP5 Bolt Head - 9mm
RCM
$264.95RCM HK MP5-E 9mm Bolt Head Equipped with a heavier duty extractor and extractor spring, the RCM MP5-E bolt head is a drop-in upgrade for all MP5/MP5K's. Spend more time at the range, less time on...HKP-20954$264.95 -
HK45, USP Firing Pin Spring
H&K Heckler & Koch
$7.95H&K HK USP/45 Firing Pin Spring Compatible With: HK USP 9mm HK USP 40 HK USP 45HKP-01080$7.95 -
GSG-5, GSG-16 Magazine - 22 Round - .22LR
GSG German Sports Guns
$29.95GSG German Sports Guns 22 Round .22LR Magazine for GSG-5 and GSG-16 The GSG magazine is a standard factory replacement magazine. The magazine is made from high-quality polymer and features a matte...HKP-00794$29.95 -
HK91, G3 Cocking Handle Support
H&K Heckler & Koch
$24.95New HK German 91, G3, & PTR Cocking Handle Support A genuine German Heckler & Koch all-steel part. Compatible With: HK91HKP-01442$24.95 -
HK MP5, MP5K Optic Mount
HKP HK Parts
$119.95HKP HK MP5 / MP5K Universal Optic Mount The HKP universal optic mount incorporates the VP9 optic footprint, allowing the user to install any VP9 compatible optic on their MP5 with a German or HKP...HKP-20967-M$119.95 -
Barrel Bore Cleaning Brush - 9mm, .357 SIG
H&K Heckler & Koch
$1.95HK 9mm / .357 SIG Barrel Bore Brush This brush is a must-have for cleaning the barrel effectively, and it is compatible with all standard 8-32 threaded cleaning rods (universal/most common thread)...HKP-02760$1.95