The KWA GAS BLOW BACK KMP9R NS2 (Black) is a wonderfully crafted SMG sized gun. The sound and kick of this gun, combined with the polymer body, folding stock, and full rail system create an impressive feeling weapon system. This is perfect for someone who wants to run a lightweight load-out with an adaptive rifle. This R type has a front bottom rail instead of the front lower grip on the other version.*note: when inserting magazine, be sure to pull the bolt back prior to inserting mag to prevent damage.