This is not an airsoft pistol it is a BB pistol. Nice glock I picked up. I wanted another glock in the collection because my 17 didn't last and saw this 19x Co2 and kinda liked it but it's not the greatest thing I've got but it's not a bad starter. Only one mag. Also it's only half blow back not full. Not sure about fitting an optic on it or not. Please PayPal me please