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
HK G36, G36K Gas Block - US
USA
Now: $50.97Was: $79.95Gas Block - US Made - HK G36E, G36KHKP-19915Now: $50.97Was: $79.95 -
On Sale
HK MP5 Folding Stock with HK Parts Adapter
HKP HK Parts / Heckler & Koch
Now: $242.96Was: $269.95German Folding Stock with HK Parts Adapter - MP5 German folding stock with MP5 HK Parts Adapter. The HK Parts adapter offers a QD attachment point and is made from hard coat anodized aluminum...HKP-19453Now: $242.96Was: $269.95 -
Out Of Stock
B&T APC9, GHM9 Drum Magazine - 50 Round - 9mm
F5 MFG
$168.95F5 MFG 50 Round 9mm Drum Magazine for B&T APC9 and B&T GHM9 The only one of its kind, Brugger & Thomet APC9 and GHM9 50 round drum magazine. Truly an incredible combination of quality and...HKP-18577$168.95 -
HK VP9, VP9SK, VP40 Complete Trigger
H&K Heckler & Koch
$69.95H&K HK VP9/VP9SK, HK VP40 Complete Trigger New HK German manufacture. Compatible With: HK VP9, VP9 TacticalHKP-16771$69.95 -
HK417, MR762, G28 Ejection Port Cover Axle Spring
H&K Heckler & Koch
$9.95H&K HK MR762/417/G28 Ejection Cover Axle Spring New Hk German manufacture for the MR762 & HK 417 firearm. The spring is used on the axle and ejection port cover door to allow it to be closed and...HKP-16753$9.95 -
Out Of Stock
HK P2000 Barrel - .357 SIG
H&K Heckler & Koch
$329.95HK P2000 .357 Barrel This is a great spare or replacement barrel to have on hand. This is a popular barrel to convert the P2000 .40 to .357.HKP-01419$329.95 -
HK USP 45 Barrel - .45 ACP - 4.41" - Full Size
H&K Heckler & Koch
$384.99HK USP .45 ACP Full Size Standard Length Barrel This part can be a replacement barrel for the USP Tactical if you do not want to have the threaded barrel installed. Easy drop-in installation. It can...HKP-01520$384.99 -
HK MR556, MR762 Rail Segment - 5 slot
H&K Heckler & Koch
$39.95HK MR556 & MR762 Rail Segment - MRS 5 slot Rail ASM New Factory HK 5 slot rail segment for the MRS style HKey mod rail forearms. ***Not compatible with the Euro spec HKey "Small", this is for the...HKP-17510$39.95 -
HK SL8 Buttstock Cheek Riser Piece
H&K Heckler & Koch
$34.95Heckler and Koch HK German SL8 Stock Cheek Riser Piece Compatible with all HK SL8 models. Cheek piece for SL8-1 and SL8-6 riflesHKP-01701$34.95 -
HK MP5 Locking Roller +6 - .40 S&W
HKP HK Parts
$11.95HK US MP540 Locking Roller, +6 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt...HKP-17565$11.95 -
On Sale
HK91, G3 Bolt Carrier - Full Auto - Tungsten - Made by EBO Under HK Contract
EBO
Now: $179.96Was: $199.95Used HK Contract Greek (EBO) F/A Date Coded Tungsten Filled Bolt Carrier. HK German G3 F/A date coded bolt carrier with the tungsten inserts. The tungsten inserts and upgrade is ideal for those that...HKP-16572Now: $179.96Was: $199.95 -
On Sale
Harris Bipod Adapter - Picatinny
GG&G
Now: $35.96Was: $39.95Harris Bipod Adapter Made By GG&G Enables a Harris Bi-pod to attach to a mil-spec Picatinny rail. GG&G's AR-15 Harris Bipod Adapter is rugged and low profile. Features of the GG&G Bipod Adapter...HKP-02307Now: $35.96Was: $39.95