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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
On Sale
HK P7 Series Magazine Follower Insert - BLEMISHED
H&K Heckler & Koch
Now: $9.95Was: $29.95H&K HK P7 Series Magazine Follower Insert - BLEMISHED ONLY 1 UNIT AVAILABLE COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Firing Pin Return Spring or...HKP-02365-BNow: $9.95Was: $29.95 -
HK91, G3, PTR Magazine Spring - 5 Round
H&K Heckler & Koch
$22.95H&K 91/G3/MSG90 5 Round Magazine Spring This factory HK spring is designed for the 5-round HK91, G3, and MSG90 magazines. Built for durability and reliable feeding, it's an essential replacement part to keep your magazine in top condition. Compatible...HKP-21827$22.95 -
On Sale
HK MP5K Stock or Brace Adapter - .40 S&W, 10mm
HKP HK Parts
Now: $103.95Was: $129.95HKP HK Parts Brace and Stock Adapter for HK MP5K .40, 10mm Add your favorite brace or stock to your 40 or 10mm MP5K with the HK Parts stock adapter. Designed to adapt UMP style and B&T folding stocks directly to the 40, 10 K platform...HKP-21832Now: $103.95Was: $129.95 -
HK21 Sling Mount for Barrel Shroud
H&K Heckler & Koch
$38.95Heckler and Koch Barrel Shroud Sling Mount for your HK21 Features: German-made spring steel sling clip Designed for the HK21 and HK21-A1 barrel shroud Correct HK production part for a secure sling attachment Compatible With: HK21, HK21-A1 HK21E,...HKP-21820$38.95 -
On Sale
HK UMP, USC 4 Piece M-LOK Set - Cerakote
HKP HK Parts
Now: $118.95Was: $139.95HKP HK UMP/USC 4 Piece M-LOK Set - Cerakote Upgrade your UMP/USC with the HK Parts 4-piece M-LOK set. This kit significantly expands the range of attachments you can add to your UMP/USC receiver, making it the ultimate choice for customization. Crafted...HKP-21664-MNow: $118.95Was: $139.95 -
Out Of Stock
B&T Recoil Buffer Pin - 3x12
B&T Brugger & Thomet
$1.95B&T Recoil Buffer Pin - 3x12 B&T factory recoil buffer pin for folding and telescopic stocks.HKP-21762$1.95 -
On Sale
B&T Polymer Lower for USW-M17 - Coyote Tan
B&T Brugger & Thomet
Now: $300.95Was: $355.00B&T Polymer Lower for USW-M17 - Coyote Tan The practical polymer conversion kit transforms a normal P320 (full-size or compact) in less than two minutes into a USW-320 with integrated stock. Just transfer the trigger group, the slide and the...HKP-21743Now: $300.95Was: $355.00 -
On Sale
HK MP5K Barrel - .40 S&W - Threaded 14x.75 with 3 Lug
RCM
Now: $223.95Was: $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-21585Now: $223.95Was: $279.95 -
On Sale
HK416 Handguard - 9" - Strike Industries GRIDLOK - Full Duty
Strike Industries
Now: $286.95Was: $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-21312Now: $286.95Was: $318.95 -
Out Of StockOn Sale
HK MP5, SP5 Binary Trigger Group - SEF Navy - BFSIII
HKP HK Parts / FA Franklin Armory
Now: $1,087.95Was: $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-21160Now: $1,087.95Was: $1,499.95 -
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