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
-
HK416, MR556 Handguard - 12.5" - M-LOK - FDE
H&K Heckler & Koch
$429.95H&K HK MR556/HK416 12.5" M-LOK Compatible Handguard Manufactured by HK from aircraft grade aluminum with a hard coat anodized finish, this M-LOK handguard is designed for the Heckler & Koch MR556 & HK 416 rifles chambered in 5.56x45mm and ...HKP-99323$429.95 -
HK417, MR762 Upper Receiver and Handguard - Flecktarn
H&K Heckler & Koch
$1,489.95HK417, MR762 Upper Receiver and 13.5" Handguard - Flecktarn Factory HK MR762 matching flecktarn upper receiver and 13.5" handguard. ONLY 3 SETS AVAILABLE AND WILL NOT BE RESTOCKED Compatible With: HK MR762 HK417HKP-99325$1,489.95 -
On Sale
HK21E, HK11A1, HK11E Barrel - 7.62 / .308 - 17.7" - Threaded 15x1
Michaels Machines
Now: $994.95Was: $1,168.95MM HK21E, HK11A1, HK11E Barrel - 17.7" Michael's Machines HK21E barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Barrels come stripped, requiring a flash hider or muzzle device and barrel handle...HKP-22333Now: $994.95Was: $1,168.95 -
On Sale
HK21 Barrel - 17.7" - Threaded 15X1 - 7.62x51 / .308
Michaels Machines
Now: $994.95Was: $1,189.95MM HK21 Barrel - 17.7" - CHF Michael's Machines HK21 barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Barrels come stripped, requiring a flash hider/muzzle device and barrel handle assembly (all...HKP-22332Now: $994.95Was: $1,189.95 -
On Sale
FN-FNS .40 S&W Pistol Magazine - BLEMISHED
FN
Now: $49.95Was: $79.95FN-FNS .40 S&W Pistol Magazine - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED MAGAZINE ONLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each magazine was...HKP-19741-BNow: $49.95Was: $79.95 -
HK MP5K, SP89 Trigger Group with AC Unity Grip and Match Trigger
HKP HK Parts
$644.85HKP HK MP5K/SP89 Trigger Group with AC Unity Grip & Match Trigger The MP5K match trigger group combined with the AC Unity grip is a great choice for anyone seeking a tactical and aesthetically pleasing build. Featuring a robust metal housing and a...HKP-22254$644.85 -
On Sale
HK SL6 Bolt Head Complete - BLEMISHED
H&K Heckler & Koch
Now: $179.95Was: $249.95H&K HK SL6 Bolt Head Complete - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. New old stock and the last units...HKP-17496-BNow: $179.95Was: $249.95 -
On Sale
HK MP5K, AP5-P Recoil Guide Rod - 9mm
MKE
Now: $19.95Was: $24.95MKE HK MP5K 9mm Recoil Guide Rod Incomplete recoil spring guide rod. Compatible With: MP5K MKE AP5-PHKP-22237Now: $19.95Was: $24.95 -
On Sale
HK 4 Round HK 630/SL6 Magazine - Black - BLEMISHED
H&K Heckler & Koch
Now: $259.95Was: $359.95H&K 4 Round HK 630/SL6 Magazine - Black - BLEMISHED ONLY 2 UNITS AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This is a...HKP-18205-BNow: $259.95Was: $359.95 -
On Sale
HK416, MR556 9" Modular Rail System - Black - BLEMISHED
H&K Heckler & Koch
Now: $286.95Was: $399.95H&K HK MR556/416 9" Modular Rail System - Black - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK German...HKP-17341-BNow: $286.95Was: $399.95 -
On Sale
HK MP5 QD End Cap with Buffer - Black - USED
HKP HK Parts
Now: $59.95Was: $99.95HK MP5 QD End Cap with Buffer - Black - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. With this MP5 QD end cap upgrade you will get a heavier buffer to...HKP-20118-BL-BNow: $59.95Was: $99.95 -
On Sale
HK USC (.45 ACP) Incomplete Trigger Housing - Gray - Used
H&K Heckler & Koch
Now: $29.95Was: $39.95H&K USC (.45 ACP) Incomplete Trigger Housing - Gray - Used ONLY 1 UNIT AVAILABLE - AS PICTURED Used HK German USC Lower Receiver Empty. German HK perfect for spare parts. You can choose gray or black. THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN,...HKP-16479-GY-BNow: $29.95Was: $39.95