Description This lot is for four stripped AR15 Multi Caliber lower receivers of various makes. First is two Centurion arms CM4 lowers with boxes. One Anderson AM-15 lower. And one LMT MARS-LS lower receiver. All of the receivers are made of forged aluminum with black anodized finishes. Must ship to a FFL holder. Condition: New. Serial: CM2571 CM2578 22133336 lx Manufacturer: Centurion Arms, LMT, Ande Caliber: 5.56, .223, .300 BLK Model: CM4, AM-15, MARS-LS Book# 04360 04361 04358 04357