Colt 5.56x45mm M4 Complete Lower Receiver

Firearm Specifications,Caliber: 5.56x45mm
UPC: 098289600073
Lower Receiver Material: 7075-T6 Aluminum
Lower Receiver Finish: Black Hardcoat Anodized
Fire Mode: Semi-Automatic
Trigger Type: Single Stage
Safeties: Reversible Safety Selector