Master Dallas Airsoft sums up his review of the Northeast Airsoft Sten MKV GBB to be "maximum realism, maximum inefficiency." Find out why in the video. The STEN MK5 is an improved version of the British STEN gun, a simple and cheap SMG used in WWII and beyond. It has a wooden pistol grip, fore grip, and stock for better handling and comfort. It still retains the distinctive side magazine, receiver shape, and sights of the original STEN. The real gun used the magazine to control the recoil, as the gun was too short and hot to hold elsewhere. The airsoft replica is realistic and heavy, and requires assembly by the user. It can use green gas or HFC 134a.