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 P30 Conversion Barrel - .40 S&W to 9mm - Threaded 13.5x1
RCM
$214.95RCM HK P30 .40 to 9mm Conversion Barrel - Threaded - 13.5x1 This 9mm conversion barrel is a drop-in replacement that allows your P30 to shoot the popular 9mm cartridge. Comes with a thread protector. Each barrel is made from ordnance-grade steel,...HKP-21786$214.95 -
Out Of Stock
B&T APC9, GHM9, SPC9 Lower Trigger Group - Aluminum
B&T Brugger & Thomet
$689.95B&T Aluminum Lower Trigger Group for APC9, GHM9, SPC9 B&T factory semi-auto lower trigger group for all APC9, SPC9, and GHM9 platforms. Made from hard-coat anodized aluminum. Compatible With: B&T APC9 B&T GHM9 B&T SPC9HKP-21756$689.95 -
HK P30 MOD 1 Compensator - Threaded Barrel
HKP HK Parts
$179.95HKP HK P30 MOD 1 Compensator - Threaded Barrel The HK Parts MOD 1 compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip and recoil, getting you back on target quicker. Each MOD 1 comp...HKP-21220$179.95 -
HK MP5, SP5, G36 Helmet Stock Cheek Support
B&T Brugger & Thomet
$168.00B&T Brugger and Thomet Helmet Stock Cheek Support for HK MP5, HK SP5, and HK G36 B&T cheek support for B&T helmet stocks. Compatible With: MP5, MP5K SP5, SP5K G36HKP-21684$168.00 -
HK MP5SD, MP5K Locking Piece - 120 Degree - .40 S&W, 10mm
RCM
$44.95RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece Compatible With: MP5, MP5K MP5SDHKP-21524$44.95 -
HK91, G3 Flash Hider for M.A.R.S Suppressor - Threaded 15x1 RH
B&T Brugger & Thomet
$109.95B&T Brugger and Thomet Flash Hider for M.A.R.S Suppressor, Threaded 15x1 RH for HK91 and HK G3 7.62x51 / .308 Specifications: Made in Switzerland Threaded 15x1 RH Does not include face shims Compatible With: HK91, G3, PTR HK417, MR762 HK PSG1 7...HKP-21518$109.95 -
HK MP5 Parts Kit - Tactical Package
HKP HK Parts / Heckler & Koch
$2,199.95HKP MP5 Parts Kit Tactical package Vintage flavor with modern flare. Our team set out to strike a symbiotic balance of classic MP5 with modern accessories delivered at an affordable price. The result is a build kit comprised of vetted components...HKP-21495$2,199.95 -
Picatinny 8" Triangle Stock with 1913 Folding Mech
JMAC Customs
$261.00JMAC Triangle Stock 8" Stock with 1913 Folding Mech Features: 2x Integrated QD Sling Socket 8" Length 0.275" Cheek Rise Drilled and tapped for optional cheek risers 7075 T6 Aluminum Hard-Coat Anodized **Not compatible w/LevTech Manufacturing panels...HKP-21245$261.00 -
HK G36 C-Mag System - 100 Round Drum
Beta C-Mag
$839.95The Beta Company 100 Round Beta C-Mag Kit for HK G36 These drums are designed with clear back covers to enable you to see your round count. This magazine is the top-of-the-line package from The Beta Company. This works in any weapon...HKP-21205-M$839.95 -
HK G3 - FMP Early Type Demilled Front End
FMP HK CONTRACT
$99.95HK G3 - FMP Early Type Demilled Front End Early style G3 front end with no hanger. These are the perfect option for those doing custom builds. Good condition over all. Includes: Cocking tube Complete cocking handle assembly Trunnion Barrel pinHKP-20845$99.95 -
On Sale
Bolt Knob - Fluted - Titanium
Tactical Precision MFG
Now: $24.95Was: $48.99TPM - Fluted Bolt Knob - Titanium These bolt knobs can dress up any rifle with a 5/16×24 threaded bolt handle. Features: Dimensions: 1.5" x 7/8" x 7/8" Weight: 2 oz. Material: titanium Threads: 5/16x24HKP-20769Now: $24.95Was: $48.99 -
HK USC, UMP Stock Block C Eyelet with Thumb Screw
HDPS
$169.95HDPS HK USC, UMP Stock Block C Eyelet / Thumb Screw Great option since factory HK UMP stocks are hard to find and expensive. The HDPS HK USC/UMP stock block "C." Each unit comes with eyelet / thumb screw design. This is the type for use with the ACE...HKP-20688$169.95