RIFLE: R GUNS MODEL TRR15-M4-CARBINE, SERIAL NUMBER BAK14312, BLACK (MATTE), YES - INCLUDES HARD PROTECTIVE CASE, SEMI - AUTOMATIC, 5.56MM, 16" Notes: This R GUNS model TRR15is a 18 inch barrel rifle chambered in 5.56 nato . Comes with one 30 round magazine, gun only. (These photos are the best statement of condition. please review them carefully before purchasing.)