USM4 | Mil Spec Lower Receivers

USM4 LOWER RECEIVERS

All USM4 Special Forces lower receivers are machined from 7075-T6 billet aluminum, bead blasted then hard anodized.

MILITARY PERSONNEL DISCOUNT

Enter the military personnel discount authorization code to instantly apply discount pricing to all USM4 items:

SBGI FOUNDATION CERTIFIED

A financial contribution is donated to Special Forces Veterans Service Organizations with the purchase of each USM4 component.

START WITH A PRECISION TOOLED MIL SPEC USM4 LOWER RECEIVER

Special Forces Lower Receiver Standard Model 5.56mm $276.00	Special Forces Lower Receiver G400 Magpul Black 5.56mm $338.00	Special Forces Receiver G310 Magpul Black 5.56mm $375.00	Special Forces Lower Receiver G400 OD Magpul 5.56mm $338.00
Special Forces Lower Receiver G400 FOF Magpul 5.56mm $338.00	Special Forces Lower Receiver G310 FOF Magpul Stock 5.56mm $375.00	Special Lower Receiver G400 FDE Magpul 5.56mm $338.00	Special Forces Lower Receiver Magpul G310 FDE 5.56mm $375.00

COMPLETE RIFLES BUILT ON USM4 LOWERS WITH 100% MIL SPEC COMPONENTS
FROM TRUSTED MANUFACTURERS COLT, LWRC, TROY, AND HOGAN

USM4 W/ Colt 6933 11.5" Upper $1,635.00	USM4 Lower / Colt 6940 Upper Receiver 5.56mm $1,535.00	USM4 / Troy CQB Upper Kit 5.56mm $2,195.00 Contact USM4 for item availability
USM4 / Hogan Gas Piston 5.56mm $1,935.00	USM4 / Colt 6920 Upper 5.56mm $1,135.00	USM4 / LWRC 5.56mm / 6.8mm $2,135.00