The KWA GAS BLOW BACK KMP9R NS2 (Dark Earth) 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 version features a front bottom rail in lieu of the front vertical grip of the regular MP9.*note: when inserting magazine, be sure to pull the bolt back prior to inserting mag to prevent damage.