Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM 12.5in Mid Length Black

Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM 12.5in Mid Length Black. Chambered in 5.56 NATO/223 Rem the 4150 Chromoly Vanadium barrel comes in various lengths. This barrel features a 1:8 twist ratio and a mid-length gas system with a manganese phosphate coated exterior chrome lined bore and match crown for maximum service life EXCLUSIVE to Lead & Steel All HM Defense barrels are match-grade tripled-honed & button-rifled for superior accuracy. All barrels feature Mil-spec M4 feed ramp exte