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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HKP Roller +1 - New - 8.01mm
H&K Heckler & Koch
$8.99Roller +1 - New - 8.01mm HK Parts Standard (8.01 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2...HKP-19424$8.99 -
Out Of Stock
HK MP5, MP5K Paddle Mag Release Contact Piece - USA
HKP HK Parts
$15.95HKP HK Parts 9mm Contact Piece HK MP5 and HK MP5K Factory correct US manufactured MP5, MP5K 9mm Contact Piece for Paddle magazine release. Each part was made using the same material and...HKP-17403$15.95 -
On Sale
HK MP5 Magazine Pouch - Single - 9mm
Comp-Tac
Now: $35.96Was: $44.95Comp-Tac HK MP5 9mm Single Magazine Pouch The single magazine pouch PLM is an all Kydex magazine pouch which gives a smooth friction free surface perfect for a quick reload for your HK MP5. The PLM...HKP-20099Now: $35.96Was: $44.95 -
On Sale
GSG-5, GSG-16 Magazine - 22 Round - .22LR
GSG German Sports Guns
Now: $24.71Was: $29.95GSG German Sports Guns 22 Round .22LR Magazine for GSG-5 and GSG-16 The GSG magazine is a standard factory replacement magazine. The magazine is made from high-quality polymer and features a matte...HKP-00794Now: $24.71Was: $29.95 -
On Sale
HK Parts Decal Sticker - Classic Style
HKP HK Parts
Now: $1.21Was: $1.50HK Parts Decal Sticker - Classic Style Perfect addition to your safe, vehicle, motorcycle, boat, or just about any place. Available in black and white.HKP-18652Now: $1.21Was: $1.50 -
HK GSG-5 Rear Sight
H&K Heckler & Koch
$18.95H&K GSG-5 Rear Sight This item will fit all GSG-5 models, including the PK and P models. This item is an all-steel HK-made part designed for combat and the toughest of environments. Each HK factory...HKP-02401$18.95 -
On Sale
Barrel Bore Cleaning Brush - 9mm, .357 SIG
USA
Now: $1.61Was: $1.95HK 9mm / .357 SIG Barrel Bore Brush This brush is a must-have for cleaning the barrel effectively, and it is compatible with all standard 8-32 threaded cleaning rods (universal/most common thread)...HKP-02760Now: $1.61Was: $1.95 -
HK416, MR556, MR762 Buffer Retainer Pin
H&K Heckler & Koch
$3.95Heckler and Koch HK416, HK MR556, HK MR762 Buffer Retainer Pin Compatible With: HK416, MR556 HK MR762HKP-12704$3.95 -
Out Of Stock
HK416, MR556, G36, SL8 Piston Ring - Replacement Set of 3
H&K Heckler & Koch
$19.95HKP Gas Piston Ring Replacement Combo Set- 3 Rings The gas rings are prone to periodic breakage and wear and tear and require them to be replaced periodically. These are some of the most common...HKP-00048$19.95 -
HK91, G3 Cocking Tube
H&K Heckler & Koch
$134.95HK German G3, 91, PTR Cocking Tube This is the factory-new part straight from HK Germany, and it is heat treated with the proper ribbed cocking tube extrusion. No longer in production and not POF or...HKP-01041$134.95 -
On Sale
HK21 Cocking Handle - Extended Style
HKP HK Parts
Now: $55.97Was: $69.95HK Extended Cocking Handle - HK21 Rubberized extended cocking handles for the older style HK21 firearms. This extended cocking handle makes a HUGE difference when trying to charge the HK21 firearm,...HKP-00363Now: $55.97Was: $69.95 -
On Sale
HK MP5, SP5 Folding Brace
B&T Brugger & Thomet / SB Tactical
Now: $237.96Was: $279.95B&T MP5/SP5 Folding Brace - Swiss/US Factory Swiss B&T MP5, SP5 Folding Pistol Brace with the SB Tactical/B&T components assembled. A rare offering using the B&T Swiss manufactured folding polymer...HKP-19353Now: $237.96Was: $279.95