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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Out Of Stock
HK416, MR556, HK417, MR762 Rear Diopter Sight
H&K Heckler & Koch
$226.95H&K HK MR556/MR762/416/417 Rear Diopter Sight Factory correct rear diopter sight for 416/417 and MR platforms. This sight can be paired with a fixed front sight or folding front sight. Compatible With: HK MR556 HK416 HK MR762 HK417HKP-00027$226.95 -
HK MP5, HK90 Series Trigger Spring - SEF and Navy - 3 Position - Surplus
H&K Heckler & Koch
$4.95HK 90 Series SEF & Navy Style Trigger Return Spring - Surplus For HK 90 series (semi or full-auto). This item will fit any NON-burst trigger pack. Compatible With: MP5, MP5K, SP89, & SP5K HK G3, HK91, PTR HK 93, 33, HK33K, & HK53 Other HK 90...HKP-01092$4.95 -
HK P Series Cocking Piece LEM
H&K Heckler & Koch
$69.95HK P Series Cocking Piece LEM Compatible With: HK P30 HK P30L HK P30SK HK P2000 HK P2000SKHKP-01769$69.95 -
On Sale
HK91, G3 US Made Trigger Pack - Semi-Auto - 4 U.S. 922 Parts
HKP HK Parts
Now: $199.95Was: $249.95HKP/H&K G3/91 (7.62x51/.308) US Made Trigger Pack - 4 U.S. 922 Parts HK G3, 91 & PTR .308 Semi Auto Trigger Pack Complete. Works with all 7.62 & .308 HK style firearms. Each trigger group incorporates the following US made compliant parts...HKP-17949Now: $199.95Was: $249.95 -
On Sale
HK MP5 Trunnion - 9mm
RCM
Now: $54.95Was: $64.95RCM MP5 9mm Trunnion US made to exact factory HK specifications and machined completely from ordnance grade steel and heat treated to factory specs. Compatible With: MP5, 94 MP5K SP89 Clones or other custom buildsHKP-01193Now: $54.95Was: $64.95 -
On Sale
HK Parts 2 Point Operator Sling
HKP HK Parts
Now: $15.95Was: $19.95HKP HK Parts 2 Point Operator Sling 2 point sling similar to the popular Magpul style sling. Made to last and a great sling for the money. Not set up for use on the HK style rifles unless you add AR15/M4 style attachment points for the 2 points of the...HKP-15375Now: $15.95Was: $19.95 -
On Sale
HK MP5, MP5F Recoil Rod Guide Ring - Enhanced
HKP HK Parts
Now: $2.95Was: $3.95HKP MP5F & MP5 40,10 Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced New Enhanced material for greater longevity and durability Our US made recoil rod guides are the made from the strongest most durable material available much better than...HKP-17835Now: $2.95Was: $3.95 -
On Sale
HK MP5K, SP89, SP5K Recoil Rod Assembly - USA
DTAC Dakota Tactical
Now: $28.95Was: $34.95HKP MP5K, SP89, & SP5K Recoil Rod Assembly - USA The new US-made Dakota Tactical recoil rod assembly is completely micro-polished and built of the finest materials. This is a great item to have on hand as a spare part as this is a wear and...HKP-02169Now: $28.95Was: $34.95 -
HK G36 Magazine Conversion to AR-15 Magwell
H&K Heckler & Koch
$235.99H&K HK G36 to AR-15 Mag Conversion Magwell - Black Simply swap the magazine well from the G36 to this offering and you can then run AR15/M4 style magazine in your G36 or SL8/G36 conversion. Allows use of all AR15-M4 magazines in the G36 with this...HKP-17605$235.99 -
HK45C, HK45T, USPC, USPCT Magazine - .45 ACP - 8 Round
H&K Heckler & Koch
$64.95H&K 8 Round HK USPC/45C .45 ACP Floorplate Brand new German HK manufacture. Compatible With: HK45 Compact, HK45 Tactical HK USP Compact 45, HK USPC TacticalHKP-01454$64.95 -
On Sale
HK MP5K to MP5 Stock or Brace Adapter
HKP HK Parts
Now: $103.95Was: $129.95HKP HK MP5K to MP5 Brace/Stock Adapter Our new MP5K to MP5 stock adapter is the perfect addition for those looking for a stock that provides a better line of sight and a better cheek rest position like the MP5 A2 fixed stock does. This stock adapter will...HKP-20988Now: $103.95Was: $129.95 -
On Sale
HK MP5 Top Rail
MI Midwest Industries
Now: $135.95Was: $159.95MI HK MP5 Top Rail Midwest Industries Picatinny and M-lok top rail for MP5, HK94 style weapons and clones. An amazing profile option for your MP5 style weapon. Offers a combination of strength, adaptability and extreme lightweight features. This rail is...HKP-19112Now: $135.95Was: $159.95