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 Mark 23 Recoil Rod and Spring - Complete Assembly
H&K Heckler & Koch
$179.95HK Mark 23 Complete Rod Assembly w/ Recoil Spring This part is ideal to keep as a spare as this is a common repair and replacement item.HKP-01671$179.95 -
HK USP Decocking Lever - Left Side V1, V5, V9
H&K Heckler & Koch
$47.95H&K HK USP Left Side V1/5/9 Decocking Lever A Heckler and Koch genuine part. This item allows a right-handed shooter to have the safety and or decocking functions on the LEFT side of the firearm...HKP-01169$47.95 -
HK SL8 to G36 Stock Block - Conversion - Pull Pin
HDPS
$389.95HDPS SL8 To G36 Stock Block This is the latest generation of a stock block with the pull pin, NOT the older style with the sling eyelets. The HDPS SL8 to G36 conversion stock block comes complete and...HKP-00807$389.95 -
HK G36, SL8 Cocking Handle Axle Pin
H&K Heckler & Koch
$11.95HK German G36 & SL8 Cocking Handle Axle Pin This is the rivet pin that is used to attach the swiveling cocking handle to the body of the carrier. These can be replaced as they break and wear. CoHKP-01877$11.95 -
Out Of Stock
HK UMP, USC Bolt Carrier - Semi Auto - .45 ACP - Complete
USA
$399.95USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete Replacement part for USC to UMP conversions. Marked .45 semi auto just like the OEM carrier. Includes: ExtractorHKP-18588$399.95 -
HK91, G3 Bolt Head Complete - US Made
USA
$149.95Bolt Head - Complete This item is a complete bolt head using a combination of new HK German and New US-made parts. This part counts as 1 US-made compliant part for the 922r compliance. Compatible...HKP-00839$149.95 -
HK91, G3 Handguard - Slimline Style - Jungle Green - Used Excellent
H&K Heckler & Koch
$29.95H&K 91/G3 (7.62x51/.308) Slimline Forearm - Jungle Green - Used Excellent Used in excellent shape. These are a nice addition to the collection. Compatible With:HKP-19042$29.95 -
HK33, HK53, HK93 A2 Fixed Buttstock - Surplus - Dark OD Green
H&K Heckler & Koch
$139.95Surplus - Fixed Stock - Dark OD Green - HK93,33,53 Hand-picked stocks in excellent condition. Comes with matching buttpad. Ready to install on your HK or clone rifle. German military surplus, but...HKP-18889$139.95 -
HK MP5, MP5K Magazine Body - .40 S&W, 10mm - 30 Round - Straight
HKP HK Parts
$29.95HKP MP5 40/10 30 Round Magazine Body New US Made MP5 40/10 30 Round Magazine Housing Body. Each magazine body comes black in color. Each body counts as one US made compliant part and is a great item...HKP-16508$29.95 -
HK Cable Gun Lock
H&K Heckler & Koch
$19.95HK Cable Gun Lock This is the same lock that ships with factory HK firearms.HKP-02442$19.95 -
HK MP5 Receiver Flat - Smooth Top
HKP HK Parts
$125.95HKP HK MP5 Receiver Flat - Smooth Top The MP5 receiver flat has been meticulously crafted by the original German tool and die maker of the LSC receiver flat, utilizing factory original German prints...HKP-21552$125.95 -
B&T 30 Round BT USW-A1 9mm Magazine
B&T Brugger & Thomet
$55.00B&T 30 Round BT USW-A1 9mm Magazine Swiss B&T manufactured 30 round magazine for the USW-A1 9mm. These B&T's USW replacement magazines feature the same reliability as the mags that ship with new B&T...HKP-18353$55.00