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 MP5K Barrel - .40 S&W - Threaded 14x.75 with 3 Lug
RCM
$279.95RCM HK MP5K .40 S&W Barrel - Threaded 14x.75 - 3-Lug This is the ultimate US-made barrel for any new or conversion build for the MP5K .40 cal. Crafted from top-grade CHF 41v40 material, it’s machined to impeccable standards. With the correct...HKP-21585$279.95 -
On Sale
HK P7M10 Magazine Follower Insert - .40 S&W - USED - BLEMISHED
H&K Heckler & Koch
Now: $19.95Was: $34.95H&K HK P7M10 .40 S&W Magazine Follower Insert - USED - BLEMISHED USED. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL.HKP-01364-BNow: $19.95Was: $34.95 -
On Sale
HK Pistol Flash Hider - .40 S&W - 4 Prong - Threaded 14.5x1 LH
USA
Now: $43.95Was: $79.95HK .40 S&W 4 Prong Flash Hider - 14.5x1 LH THIS IS A CLOSEOUT PRODUCT DUE TO A HARMONIC (TUNING FORK EFFECT) PRESENT WHEN SHOOTING. THE PART IS ENTIRELY FUNCTIONAL AND IS SOLD AS-IS, RETURNS WILL NOT BE ACCEPTED. For use on all HK German .40...HKP-21445Now: $43.95Was: $79.95 -
HK MP7, G36 Picatinny Side Rail
B&T Brugger & Thomet
$57.95B&T HK G36/MP7 Picatinny Side Rail Comes with all mounting hardware. Each rail is sold individually. Compatible With: HK G36 HK MP7 Specs: 127mm lengthHKP-21419$57.95 -
HK416 Handguard - 9" - Strike Industries GRIDLOK - Full Duty
Strike Industries
$318.95Strike Industries HK 416 - 9" Handguard - Gridlok Full Duty The Strike Industries GRIDLOK® Rail for 416 gives you a primary, a secondary or multiple setup options as a quick and direct handguard swap. The GRIDLOK® Rail for 416 has the SI patent...HKP-21312$318.95 -
Out Of Stock
HK MP5 Navy Binary Trigger Group - Engraved - RAL8000
HKP HK Parts / FA Franklin Armory
$1,499.95Franklin Armory BFSIII HK-C1 – Trigger Group - RAL 8K Coming Soon! 3 Position Navy style Engraved Pictograph – HK Binary Trigger Group Our latest and greatest Binary trigger group freshly delivered with a factory HK German housing that...HKP-21290-M$1,499.95 -
Out Of Stock
HK MP5, SP5 Binary Trigger Group - SEF Navy - BFSIII
HKP HK Parts / FA Franklin Armory
$1,499.95COMING SOON! Franklin Armory BFSIII HK-C1 – Trigger Group - RAL 8K 3 Position 2 round burst style Engraved Pictograph – HK Binary Trigger Group Our latest and greatest Binary trigger group freshly delivered with a factory HK German housing...HKP-21160$1,499.95 -
HK MP5K 0,1,3 Burst Trigger Housing or Frame
H&K Heckler & Koch
$224.95MP5K & SP89 Ambidextrous Grip Frame, Trigger Housing marked with the safe, semi & 3rd burst options only (3 position burst only housing). A Genuine Heckler and Koch part. This housing is made for ambidextrous trigger configurations. Trigger Pack...HKP-01684$224.95 -
G3 Backplate, Incomplete
H&K Heckler & Koch
$29.95G3 Incomplete Backplate Factory German G3 refinished backplate. This backplate was fully reconditioned and Parkerized for a factory look. A great replacement or spare to have around to replace your broken or worn out backplates. Don't forget to get a new...HKP-20859$29.95 -
On Sale
Remington 700 - 20 MOA - Scope Base Long Action - Tungsten
Tactical Precision MFG
Now: $38.75Was: $76.99TPM Remington 700 Scope Base Long Action 20 MOA These tight tolerance, bomb proof scope rail allows the shooter to make the best use of the scope's elevation adjustment for those long-range shots and engagements with 20 MOA options and will match factory...HKP-20781Now: $38.75Was: $76.99 -
HK MP5 Bolt Carrier - Full Auto - .40 S&W, 10mm - Tungsten
H&K Heckler & Koch
$449.95New HK German MP5 40/10 Factory F/A Bolt Carrier This is the latest and greatest version of the MP5 40 and MP5 10mm carrier. No longer in production or manufactured. Tungsten filled German HK and the real deal.HKP-19390$449.95 -
Out Of Stock
HK G36E Barrel - 5.56 / .223 - 19"
USA
$499.95Barrel - USA - HK G36E Brand new HK G36E barrel. Specifications: Barrel length 19"HKP-19273$499.95