UMP / USC Series

Kaw Valley Precision .45 Mach 3-Lug Mount   Fully captured, enclosed system designed for use with the KVP MACH Linear Comp system. By utilizing 1-1/8"x28 TPI threads, the MACH 3-Lug Mount will fit many common silencer models such as the SilencerCo...

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

HKP HK UMP 9mm Barrel - Threaded 1/2x28 - 3-lug HKP UMP 3-lug 1/2x28 threaded barrel. This is the perfect replacement for a worn out barrel or as a spare. With the 3-lug attachment point you can attach any suppressor or flash hider that is in-spec or you...

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 for ease of use and a beautiful fit. Includes: Each...

HKP HK UMP Floor Plate Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces. Made in the USA and counts as 1 US compliant part.

M-LOK Quick Detach Sling Swivel Mount The Aim M-LOK® QD Sling Mount stud with QD swivel provides a front attachment point for your push button QD sling or sling with just strap. Includes: All necessary mounting hardware and wrenches Features: High...

HDPS US-Made Steel Trigger - USC & SL8 HDPS US-made triggers are ideal for meeting US 922r compliance as this counts as one of the needed parts when converting the HK USC to HK semi-auto UMP and the HK SL8 to semi-auto G36. Compatible...

HK UMP Release Lever Spring For All UMP Lowers  

HK UMP Firing Pin - Retainter Pin   This is the pin that trips the trip lever on the UMP lower.   Compatible With: HK UMP  

HKP UMP/USC Extended Handguard - Black Cerakote The HK Parts UMP extended handguard is the ultimate choice for your UMP or USC. M-LOK attachment points and a robust picatinny rail on the extended section provide accessory mounting points for any loud-out...

HK UMP 3 Position Navy Lower New German Heckler & Koch UMP 3 position (0, 1, full) Navy lower. Each lower comes complete with all the factory internals. These lowers are ideal for the USC to UMP conversion and to keep as a spare. Each lower is...

HKP Single Point Sling - ACU Digital Camo HK single-point bungee sling for use on all HK & other firearm applications. This super high-quality sling is a must-have for those who prefer operating with a single-point sling over the traditional 3-point...