Probably the best option in getting a gas blowback airsoft gun for CQB games is the new ASG B&T USW A1 that Airsoft Atlanta now has in stock for players in the U.S.... "The ASG B&T USW A1 Airsoft Gas Gun - black folding stock pistol that can take either Co2 or green gas magazines. Solid and compact folding stock native to the pistol. The USW has a unique slide and trigger system allowing double action or single action. Fully adjustable hopup system. Full metal slide and frame and high quality polymer lightweight stock. Threaded metal outer barrel for attachments (14mm CCW) and tracer units.

Overall this is a pretty impressive little pistol!

Semi-auto pistol that uses USW, CZ shadow or CZ75 magazines. Co2 (26 round) or green gas style (24 round). The gun comes with one 26-round Co2 magazine.

FPS is 325 w/.20g BBs"