USM4 AR-15 Enhanced Mil-Spec Fire Control Group NP3 Finish

USM4
700600851315
15001520
07894
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USM4 is dedicated to bringing you the best parts and components for an exceptional value. This critical AR-15 component is produced by KE Arms for license by USM4 with an emphasis on robust quality and a dedication to the end user. This particular item is fire control group designed for any Mil-spec style AR-15 lower receiver. All of the components are made in the use and the hammer and trigger are made from an investment case metal. The engagement surfaces are precision machined and this unit features a NP3 finish.

Specifications and Features:
USM4 Parts made by KE Arms 1-50-01-390
Enhanced Mil-Spec Fire Control Group
Investment case hammer and trigger
Precision machined engagement surfaces
Made in the USA
NP3 Finish

Safety Selector, spring, and Detent NOT INCLUDED

Includes:
Hammer and Spring
Trigger and Spring
Disconnector and Spring
Fire Control Pins