USC 45 FRT Lower

Ready to give your HK USC45 the functionality it has always deserved? Gone are the days of heavy factory trigger pulls, ridiculous looking fixed stocks, and lengthy field stripping. This US manufactured lower receiver is an all in 1 package to give your USC its UMP potential:

• AR15 FCG and Grip for Superior Ergonomics

• Super Safety Compatible to Allow for Rapid Follow-Up Shots

• Single Breakdown Pin for Ease of Field Stripping

• Provision for Factory HK UMP Folding Stocks

Included in order is:

• USC 45 AR Lower

• SS Lever Trip Bar

• Folding Stock Adapter

• Folding Stock Install Hardware

• Breakdown Pin

• Buffer

• Super Safety Lever, Cam, and Detent

Lower ships fully assembled and ready to run.

This lower has been tested with factory HK USC45 magazines. We cannot guarantee functionality with aftermarket magazines.

This package serves as (4) 18 USC 922R compliant parts:

• Trigger Housing

• Trigger

• Hammer

• Disconnector

Stock not included.

This conversion kit is NOT compatible with UMP45/40/9 magazines.

This is intended for factory USC45 single stack mags only.