UMP / USC Sights / Optics / Mounts

HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USC

H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight Spring

HK G36, SL8 & USC, UMP Rear Sight Screw Rear sight screw to retain HK G38/Sl8 & USC/UMP rear sights housings to the rear sight base. Compatible With: G36, SL8

HKP HK MP5/K RMR / Holosun Picatinny Sight Mount The HKP HK MP5/K RMR / Holosun Picatinny sight mount offers a secure, low-profile platform for RMR and Holosun optics. Compatible with any firearm...

HKP HK UMP/USC 4 Piece M-Lok Set - Anodized  Upgrade your UMP and USC with the HK Parts 4-piece M-Lok set, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails...

HKP HK UMP Enhanced Top Rail - Red HK USC, UMP top receiver rail with hardware. The extended length allows the use of all optics that fit on a Picatinny rail. This unit has a contoured no snag design...

Top Rail - HK USC / UMP TommyBuilt anodized aluminum high rise top rail.  Includes mounting hardware. Compatible With: HK UMP <

B&T Brugger and Thomet Aimpoint ACRO / NANO 22mm Low Mount The B&T ACRO NANO optic mount is a universal QD mount for any firearm featuring a Picatinny top rail.  Keep your optic profile compact with...

H&K HK UMP & HK USC Extended Top Rail For Optics with Screws - USED - BLEMISHED   MINOR SCRATCHES.  

HKP HK UMP & HK USC Extended Top Rail For Optics Nearly an 1" longer than the standard length top rail for mounting any Picatinny mount optic.  Made in the USA from 6061 aluminum and hard coat...

Omega Rear Sight Complete for HK UMP All the parts needed for the rear sight on a Gideon Shadow UMP style build. New USA made parts for your build.   Will only work with Gideon Shadow. Locking screw...

HKP HK MP5, MP5K Aimpoint ACRO Picatinny Sight Mount The HKP Aimpoint ACRO Picatinny mount is a rugged, low-profile solution for mounting your ACRO red dot sight. Designed to fit any firearm with a...