Anderson AM15 in 5.56mm With 16" Barrel and 1-30 Round Mag NIB!!! FEATURES Manufacturer: Anderson Model: AM15 Condition: Factory New Caliber/Gauge: 5.56mm Barrel Length: 16" MORE ABOUT Anderson Manufacturing's AM15 Optics Ready Rifle starts with the forged 7075 T6 aluminum receivers that Anderson is famous for. It features an M4 Anderson adjustable buttstock, standard A2