Klan Shinigami Airsoft give an express review of the Rossi M4 Sentinel Omega Tan AEG after playing with it in many games. The Rossi M4 Sentinel OMEGA is an airsoft rifle featuring 18:1 steel gears, a 14.5-steel-teeth piston, and 8mm metal bushings. It incorporates a quick-detach spring guide, an electronic trigger with active braking, and a 6.02mm precision barrel. The rifle has an adjustable length of 600mm to 680mm and weighs 1950 grams.