DELTON SIERRA 316L M-LOK 1:9

5.56MM 16" 30RD OPTIC READY FEATURES:Caliber.223 Remington/5.56 NatoActionSemi-AutomaticMagazine Capacity30 roundsStock MaterialSyntheticStock ColorBlackMetal FinishColoredMetal ColorBlackTwist1:7"Weight6.2lbsOverall Length36.38"Barrel Length16"15" M-LOK railLightweight mid length barrelM4 feed ramps