Next up in the series of fully licensed airsoft pistols from ASG is the Non-Blowback CO2 Powered STI Duty One... "The DUTY ONE is fully licensed by the famous high-end small arms manufacturer, STI® International, based in Texas, USA. The pistol is semi-automatic and based on the classic model 1911 but STI® has upgraded and changed the design and many of the functions. The frame has an integrated front waiver rail for mounting light and laser. The grip is marked with STI® logo and the high rise beavertail grip secures a perfect hold on the pistol. The BB’s are stored in the drop-out magazine and powered by a 12g Co2 capsule which is cleverly kept away in the pistol grip thanks to the easy load system. The pistol has a unique serial number and the metal slide has the authentic STI® logo engraved. The STI® DUTY ONE comes in two versions – a non-blowback and a blowback version."