Double Eagle M291 spring & chrono.
In the original : Colt 1911.Measured with : 1/chrono : Umarex Combat zone 0,12 g BB , 2/chrono : Guarder high precision 0,20 g BB ,3/ chrono : Umarex Elite Force Premium 0,25 g BB .Distance : 4,5 m.Full metal.Weight with magazine : 612 g. NO 691 g , NO 230 FPS (with 0,20 g BB) !