Spike's Tactical, STLB520, Sharps Bros The Jack, Semi-automatic, Lower, 223 Rem/556NATO, Black Finish, CNC Machined from a 7075 Billet Aluminum Product Specifications UPC Code: 855319005570 Manufacturer: Spike's Tactical Model: STLB520 Model: The Jack Action: Semi-automatic Type: Stripped Lower Caliber: 223 Rem Caliber: 556NATO Barrel Length: N/A Finish/Color: Black Grips/Stock: N/A Description: CNC Machined from a 7075 Billet Aluminum Manufacturer Part #: STLB520
