Barrel,9mm-RPB/Cobray M11/9-New,Threaded,Ready To Install, Blued Not For M11/380 Product #: 585670A Shipment prohibited outside USA.Brownells is your source for Barrels,Barrel Parts at Brownells parts and accessories.It is a great upgrade that works well with our forward tactical grip, weighs about 14.5 ounces, 1.5' in OD. Fits standard 3/4 x 10 threaded barrels for M-11 Semi Auto Cobray, this part will not fit MPA Mini with 1/2 x28 barrel.This airsoft gun has the best kick and noise production of any M11, Mac 10, and Mac 11 in the airsoft gas gun market! This M11A1 is very detailed and similar to the real steel version! These guns are built lightweight but just as strong and durable as any full metal gun by using fiber reinforced polymer.