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 VP9, VP9SK, VP40 Right Side Slide Release
H&K Heckler & Koch
$18.95Right Side VP9, VP40 Slide Release Lever Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40HKP-16794$18.95 -
Out Of Stock
HK416, MR556 Buttstock - Factory E1 Style - Commercial
H&K Heckler & Koch
$199.95H&K HK MR556/416 Commercial Factory E1 Stock HK 416 factory German E1 Stock latest HK German stock for all HK 416/MR556 rifles. This HK 416 HKE1 Buttstock fits Commercial buffer tubes (receiver extensions) for M4/AR15 type weapons. NO LONGER OFFERED...HKP-15426$199.95 -
G36, SL8 Bolt Head Ejector Pin
H&K Heckler & Koch
$7.95Bolt Head Ejector Pin For G36 & SL8 This item is the pin that holds the ejector & ejector spring in place. It is a common wear and replacement item and a must-have when doing bolt head maintenance.HKP-01876$7.95 -
HK UMP Magazine Floorplate - 9mm / .40 S&W / .45 ACP
H&K Heckler & Koch
$9.95HK German UMP Floorplate For All UMP Magazines Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces.HKP-16493$9.95 -
HK91, G3, HK33, HK53, HK93 Paddle Magazine Release Contact Piece
H&K Heckler & Koch
$29.95HK .223/556 & 308 Contact Piece For Paddle Magazine Release German HK manufacture. The contact piece is used in the magazine release assembly for the paddle mag release. Compatible With: HK 33, 53, 93 HK G3, 91, PTR91HKP-00465$29.95 -
Out Of Stock
HK416, HK417, MR556, MR762 Flip Up Rear Sight - 2mm
HKP HK Parts
$139.95HK 416, MR556 & MR762, 417 Flip Up Rear Sight Diopter 2mm Sight Attaches to any standard picatinny rail. No hardware needed as this is a self-contained quick attach rear sight assembly. This unique sight features a quick & easy push button...HKP-17717$139.95 -
Harris Engineering Bipod 6-9" - Fully Adjustable With Swivel
Harris Engineering
$149.95Harris Engineering Bipod 6-9" - Fully Adjustable With Swivel This part is manufactured using high-quality parts to ensure excellent function and sustainable use. It attaches to a sling swivel stud. Carrying your rifle with a sling or shooting off-hand is...HKP-00983$149.95 -
On Sale
HK MP5K, AP5-P Vertical Foregrip - M-LOK- BLEMISHED
MKE
Now: $28.95Was: $44.95HK MP5K, AP5-P Vertical Foregrip M-LOK - BLEMISHED POLYMER BLEMISHES IN THE M-LOK SLOTS. VARYING CONDITION SHOWN - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-22471-BNow: $28.95Was: $44.95 -
HK MP5 2-Stage Trigger Group - 9mm - Complete
Timney Triggers
$478.95Timney HK MP5 Trigger - 9mm - 2 Stage - Complete The SEF Timney trigger group comes completely assembled, ready to drop into your receiver. Features a 3rd generation German ejector lever, new SEF selector lever, and a brand new factory German housing...HK-20511-M$478.95 -
HK MP5 Receiver Flat - 9mm
HKP HK Parts
$189.95HKP HK MP5 9mm Receiver Flat New MP5 receiver flat made by the original German tool and die maker of the LSC receiver flat utilizing factory original German prints and specifications. The creator of our receiver flat has been regarded as the premier flat...HKP-20921$189.95 -
Out Of Stock
HK MP5 Magazine - Subsonic Labeled - 30 Round
Zenith
$43.95Zenith 30 Round HK MP5 Subsonic Labeled Magazine Easily identify a magazine loaded with supersonic rounds versus a magazine loaded with subsonic rounds. Features: Durable electro-plated black finish for exceptional corrosion resistance All steel...HKP-20829$43.95 -
HK USP 9/40 Compensator for Threaded Barrel
HKP HK Parts
$199.95HKP HK USP 9/40 Compensator for Threaded Barrel The HK Parts USP 9/40 compensator will add a sleek and tactical look to your USP. With the quick and easy addition of our compensator you will add plenty of benefits. This compensator reduces recoil and...HKP-20820$199.95