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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On Sale
HK33, HK53, HK93, HK91, G3 Hex Buffer Screw - Front
HKP HK Parts
Now: $0.55Was: $0.69Enhanced Hex Style Buffer Screw New upgraded hex head style front buffer screw. Each buffer assembly uses 2 of these screws to affix the buffer to the back plate and central stock section. The old style buffer screws were used the older slotted head and...Now: $0.55Was: $0.69 -
On Sale
HK USP, P30, HK45 Hammer Spring - Reduced Power - 10 lb.
Lazy Wolf
Now: $8.96Was: $9.95Lazy Wolf HK Reduced Power Hammer Spring - 10 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 exclusively by master trigger smith Rick Holm at LWG...Now: $8.96Was: $9.95 -
On Sale
HK45, USP, P2000 Enhanced Magazine Release
HKP HK Parts
Now: $39.96Was: $49.95HKP HK USP/P2000/HK45C Enhanced Magazine Release Upgrade your pistol's performance with our oversized magazine release. Crafted from durable 6061 billet aluminum, this US made component offers an expanded surface area for quicker, more intuitive magazine...Now: $39.96Was: $49.95 -
On Sale
HK Locking Roller Pin - Bolt Head
H&K Heckler & Koch
Now: $8.96Was: $9.95HK Heckler & Koch HK Pin - Roller - Locking - Bolt Heads HK roller retainer pin or clamping sleeve (holds roller retainer plate in place). Each retainer pin works with all roller retainer plates & springs. All 3 types including oval-shaped...Now: $8.96Was: $9.95 -
On Sale
HK MP5, MP5K Magazine - 30 Round - LEO Marked
H&K Heckler & Koch
Now: $85.45Was: $94.95Heckler and Koch HK MP5, MP5K 30 Round Magazine with Reproduction LEO Marking Get the classic LEO-marked look without the cost of rare, surplus mags. Each magazine starts as a factory-fresh German HK 30-round mag and is professionally laser engraved with...Now: $85.45Was: $94.95 -
On Sale
HK P30, P30L Magwell - Low Profile
HKP HK Parts
Now: $47.96Was: $59.95HK P30, P30S & P30L Tactical Low Profile, EDC Magwell - 9mm & .40 Cal This low-profile mag-well is for the average everyday P30 owner who would like the enhancements and competitive advantage a mag-well offers without the bulk of the larger...Now: $47.96Was: $59.95 -
On Sale
HK USP, P30, HK45 Hammer Spring - Reduced Power - 11 lb.
Lazy Wolf
Now: $8.96Was: $9.95Lazy Wolf HK Reduced Power Hammer Spring - 11 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 exclusively by master trigger smith Rick Holm at LWG...Now: $8.96Was: $9.95 -
On Sale
HK 416 .22LR Pistol Brace and Stock Adapter - Picatinny
HKP HK Parts
Now: $50.36Was: $62.95HKP HK 416 .22 Picatinny Pistol Brace/Stock Adapter CNC billet machined in the USA from one piece of aircraft grade aluminum. Each adapter was fitted for optimal use on the HK 416 .22 Pistol models with a seamless fit. Each unit has a left and right side...Now: $50.36Was: $62.95 -
HK VP9, P30 Magazine - 17 Round - 9mm
H&K Heckler & Koch
$45.95H&K 17 Round HK VP9, HK P30 9mm Complete Magazine New HK German Manufacture & Factory Fresh Production. Each factory HK all-steel bodied magazine holds 17 round of 9mm ammunition for use in all P30, P30L, P30S & HK VP9, VP9L 9mm models. Fits...$45.95 -
On Sale
HK MP5 Magazine - 9mm - 40 Round
AC-Unity
Now: $22.45Was: $24.95AC-Unity 40 Round HK MP5 9mm Magazine ADD QUANTITIES TO CART TO SEE BULK PRICING DISCOUNTS The AC-Unity 30 round MP5 magazine is a lightweight, impact resistant and reliable magazine for all 9mm HK MP5, SP5, MP5K, SP5K and clones. Constructed from...Now: $22.45Was: $24.95 -
On Sale
HK Velcro Patch
H&K Heckler & Koch
Now: $4.46Was: $4.95Factory HK Black & Red Patch With Full Velcro Back Wear your pride in HK with this HK logo patch. Embroidered HK patch with a full velcro backing for fitment on range bags, hats, clothing, etc. Specifications: 3.5" L x 2.5" HNow: $4.46Was: $4.95 -
On Sale
HK416, MR556 Magazine - 30 Round - Maritime
H&K Heckler & Koch
Now: $76.49Was: $84.99HK 416, MR556 30 Round Maritime Magazine - German HK The HK 416 and MR556 magazines will also fit all AR15/M16 variants. Designed to provide optimum ammunition feeding for any M16/M4/AR15-type weapon. Originally developed by HK for the British L85 (SA80)...Now: $76.49Was: $84.99