The M1911DS PTP is the high capacity version of the standard M1911A1 and features the KWA NS2 gas system to deliver powerful and realisc blow back action. The grip safety is fully functional and basic field stripping is accurate to the real firearm it replicates. Like every PTP model, the M1911DS is weight balanced to duplicate the actual weight of a firearm carrying a fully loaded magazine.The slide is machined alloy metal with front and rear serrations. The frame is constructed of metal alloy with integrated polymer grip. High impact, self-lubricating polymer is used for the construction of the outer barrel.