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
HK91, G3, HK33, HK53, HK93 Clubfoot Central Stock Section with Heavy Rubber Buttpad - OD Green
Michaels Machines
$199.95Michaels Machines Clubfoot with Heavy Rubber Buttpad Stock for HK Rifles - OD Green US Made Clubfoot HK21E and HK23E Style Central Buttstock Section with US Heavy Rubber Buttpad in OD Green. Just...HKP-19041$199.95 -
Out Of Stock
HK MP5 Stock - KES
Safety Harbor Firearms
$279.95KES HK MP5 Stock The all-new KES is designed to fit the MP5 pattern pistols/rifles. Specifications: Guide rods slide into the existing slots present on the receivHKP-21086$279.95 -
HK USP Detent Plate - V5, V6, V9, V10
H&K Heckler & Koch
$19.95HK Detent Plate For USP Variant 5, 6, 9, & 10 Conversions This plate, when installed, will allow you to have the "safety" only and NO decock function on your pistol. This plate will fit and work for...HKP-01247$19.95 -
HK416, MR556, HK417, MR762 Micro Sights - Low Profile
Troy Industries
$199.95Troy Industries Low Profile Micro Sights For those that need a lower profile sight for enhanced cheek weld position and eye relief, this is the sight set up for you. Each rear sight includes two...HKP-01243$199.95 -
HK UMP, USC, SL8, G36 Front Sight Roll Pin
H&K Heckler & Koch
$5.95Heckler and Koch Front Sight Roll Pin for HK UMP, USC, G36, & SL8 Clamping sleeve or roll pin for calibers 9mm, .40 S&W, .45 ACP, 5.56 / .223 Compatible With: USCHKP-02158$5.95 -
HK91, G3 Bolt Locking Lever Set
H&K Heckler & Koch
$24.95HK91, G3, & PTR-91 .308 HK Bolt Carrier Bolt Locking Lever Set This is the bolt carrier locking lever set that retains the bolt head to the carrier. Each Locking Lever Set Includes: <HKP-02683$24.95 -
HK 3 Point Green Sling-Used-Surplus
H&K Heckler & Koch
$55.00H&K 3 Point Green Sling-Used-Surplus German military surplus 3 point sling in good condition. Used but 100% operational and a great value for the money.HKP-16273$55.00 -
Out Of Stock
HK USP Magazine - .45 ACP - 10 Round - Standard Floorplate
H&K Heckler & Koch
$54.9510 Round HK USP .45 ACP Magazine w/ Standard Floor Plate Perfect for those who live in states that require 10-round magazines or those that compete and require a 10-round-only magazine. Compatible...HKP-02366$54.95 -
HK USP 9mm, 40 S&W Recoil Spring
H&K Heckler & Koch
$9.95Heckler and Koch HK USP 9mm and .40 S&W Recoil Spring It is the factory 12-12.5 lb. recoil spring. Fits the 9mm or .40 USP pistols and can also be used as a reduced-weight spring for the HK USP .45...HKP-02067$9.95 -
On Sale
HK UMP, USC Stock Block B - Eyelet Thumb Screw Style
HDPS
Now: $206.96Was: $229.95HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B- Eyelet Screws New latest production HDPS HK USC/UMP Stock Block type for use with all HK UMP factory or US made Folding Stocks. Each unit comes...HKP-16756Now: $206.96Was: $229.95 -
HK MP5, SP5 Trigger Housing - SEF Universal - Like New
H&K Heckler & Koch
$149.95H&K MP5/SP5 SEF Universal Housing - Clipped & Pinned - Like New The ultimate solution for MP5 and SP5 style receivers, this universal trigger housing simplifies swapping between receivers. German...HKP-21779$149.95 -
Out Of Stock
HK416, MR556, MR762 Right or Left Side Safety Selector Lever
H&K Heckler & Koch
$33.95H&K HK 416/MR556/MR762 Right or Left Side Safety Selector Lever HK German manufactured right or left side selector lever for the ambidextrous controls of the HK 416, MR556 family of firearms. It...HKP-15250$33.95