Memorial Day Sale

Magazine Extension Kit +5 - HK VP9SK, HK P30SK HK Parts magazine extension kit adds 5 additional rounds to the HK VP9SK/P30SK magazine with the simple swap of the floor plate & high-reliability mag spring.  HKP highly recommends using a magazine...

Nefarious Arms HK 416/MR556 10.4" A3 Barrel ***THE BARREL EXTENSION RIM IS MARKED "HAUS" DUE TO AN ERROR BY THE BARREL EXTENSION SUPPLIER.  THE MARKING IS NOT VISIBLE ONCE INSTALLED.  THESE BARRELS ARE GENUINE NEFARIOUS BARRELS AS NEFARIOUS...

HKP HK33 11" Right Hand Cocking Tube This is the one and only right handed cocking tube for the HK33 cocking tube made in the US. Made to the exact HK specifications as the factory HK33 German cocking tube. Overall length is 11".

Strike Industries 20 Round HK VP9 9mm Magazine Strike Industries +5 magazine extension coupled with a 15 round factory German magazine body adds 5 additional rounds total for a fully assembled 20 round HK VP9.  Each mag comes fully assembled and...

HK UMP & USC Rear Sight Support Roll Pin This is the axle pin that holds the rear sight assembly to the rear sight housing of the receiver on the USC or UMP firearm.

Retaining Pin For Firing Pin Complete With O-Ring Compatible With: HK G36 HK SL8

H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin

HKP Cleaning Brush for HK91 and HK G3 Barrel Flutes 7.62x51 / .308 This brush is a must-have for cleaning the chamber flutes on a HK G3 or HK91-style firearm. If the flutes become clogged or dirty, the firearm will cease to extract properly and render...

Harris Bipod Adapter  This mounts to any Picatinny rail and proves a stable platform to add a Harris bipod or other similar-mounting bipods. This will fit any Picatinny spec rail or rail system. Made in the US out of aircraft-grade aluminum and...

Nefarious Arms HK 416 Gas Block Assembly Tool A Nefarious Arms creation for those that like to service or replace their 416 gas block. This assembly tool will effortlessly help you assemble or disassemble your 416 gas block by simply aligning the two...

HKP Rail Mount Compensator for Glock 17 Gen 4 The perfect addition to your Glock 17 Gen 4 firearm with our low profile, aggressive rail mount compensator that flows with the lines of the firearm for a seamless addition. The Glock 17 Comp Weight™...

10 Round Magazine with Black +7 Extension - 9mm - HK VP9SK and P30SK Drop-in magazine ready to go! HK Parts takes an existing 10 round magazine a +7 magazine extension and a 17 round mag follower from conversion kits to assemble them into a working 19...