STAINLESS STEEL BARREL M4 Contour 5.56/223
Requires the use of the .750 gas blockThis er shaw stripped barrel is machined from a 416 stainless steel. It features hand lapped button rifling with M4 feedramps. As with all er shaw  barrels it is proofed (HPT) and magnetic particle inspected (MPI). To give the shooter the best balance of weight and accuracy this barrel has a m4 profile and carbine length gas system.