Another custom handgun from the Airsoft Surgeon that is affordable is in stock right now at RedWolf Airsoft. Those who are searching for an upgraded XDM gas blowback pistol may want to look at this, especially something made by one the Airsoft Surgeon.. "The XD(M) (X-treme Duty-More) are a series of semi-automatic pistols that are polymer-framed and striker-fired.