This is the SR4-ST DELTA M electric airsoft gun from Bulldog Airsoft. This PRO level AEG has many great features not found on an airsoft rifle at this price, including, AEG (electric gun) with high-quality motor and internal parts, metal bushings, adjustable hop-up for greater accuracy, Nylon receiver to reduce the weight and deliver a custom moulded grip, high-end steel gear set. This is a Sport-Line Sr4-ST Series airsoft gun that will NOT disappoint…