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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Out Of Stock
HK45C Finger Rest Magazine Extension - +2
HKP HK Parts
$29.95HK45C 8 Round Magazine +2 Magazine Extension/Finger Rest All of the HK .45 cal mags will soon have a variety of mag extensions! More to come. HK45C 8 round +2 mag extensions. Replaces the floorplate...HKP-17999$29.95 -
HK416, MR556 Ejection Door Lock Roll Pin
H&K Heckler & Koch
$5.95Heckler and Koch HK416 and HK MR556 Ejection Door Lock Bolt or Roll Pin Compatible With: HK416 A1, A3, A5 HK MR556 A1, A4HKP-02536$5.95 -
Out Of Stock
HK UMP Paddle Magazine Release - Heckler and Koch
H&K Heckler & Koch
$16.95Heckler and Koch Paddle Magazine Release for HK UMP This is a common repair and replacement part as they are easy to break on the UMP lower. Simple and easy to install with no gunsmith needed or...HKP-00810$16.95 -
HK VP9, P30 Magazine - 27 Round - 9mm
HKP HK Parts
$109.9527 Round Magazine Complete - 9mm - HK PARTS - HK VP9, HK P30 Drop-in magazine ready to go! HK Parts takes an existing 17 round magazine and a +10 magazine extension to assemble them into a working 27...HKP-19410$109.95 -
HK VP Series, P Series, USPC Mag Pouch - Twin
Comp-Tac
$59.95Comp-Tac HK VP Series/P Series/USPC Twin Mag Pouch The Comp-Tac Twin Magazine Belt pouch is an outside the waistband holder that carries two magazines attached together. Designed to be worn at 9:00...HKP-17502$59.95 -
HK USP, P30, HK45 Hammer Spring - Reduced Power - 12 lb.
Lazy Wolf
$9.95Lazy Wolf HK Reduced Power Hammer Spring - 12 lb. An exciting new offering as a joint collaboration from the widely renowned pistol smith Lazy Wolf Guns & HK Parts! This custom spring was designed...HKP-18148$9.95 -
HK Mark 23, USP Magazine with Extension, Complete - 19 Round - .45 ACP
HKP HK Parts / Heckler & Koch
$109.95HKP HK Parts and Heckler and Koch Magazine Extension Complete 19 Round - HK Mark 23 and USP .45 Designed specifically for the Mark 23 and USP .45—perfect for those who want extra firepower at the...HKP-21586$109.95 -
HK91, G3 Magazine Follower - USA
$19.95Magazine Follower - USA - HK 91, G3, PTR USA made magazine follower for HK 91, G3 magazines. This follower is made in the USA and counts as one US made compliant part needed for builds and...HKP-18997$19.95 -
HK MP5, MP5K, SP5, SP5K Bolt Head - 9mm
RCM
$221.95HK MP5, 94, MP5K, & SP89 9mm - Complete Bolt Head Each bolt head incorporates a mixture of the finest quality US-made and factory German HK parts, making a new complete bolt head ready for use. Use...HKP-01241$221.95 -
HK VP9K Magazine, Complete - 20 Round
HKP HK Parts
$78.95HKP HK Parts 20 Round 9mm Complete Magazine for HK VP9A1 K This fully assembled 20-round magazine for the HK VP9A1 K combines a factory German 15-round magazine body with the HK Parts +5 magazine...HKP-21974-M$78.95 -
HK MP5 Handguard - M-LOK - Extended Length
UTG PRO
$197.95 - $245.95UTG HK MP5 PRO Monolithic M-LOK Handguard - Extended Length The UTG PRO extended monolithic M-LOK handguard builds on the original with added real estate out front for mounting accessories. ...HKP-21673-M$197.95 - $245.95 -
HK MP5K, SP5K Shoulder Rig Lanyard with Ring - US Made
$19.95HKP - U.S MP5K Shoulder Rig Lanyard with Ring For use with all HK shoulder harnesses to quickly deploy the stock when folded. This is the same style unit used by agencies such as the Secret Service,...HKP-20855$19.95