A Brass Eagle Raptor would be a better choice. They're all over the place for about 30 bucks, the valve requires a single worm screw to be threaded into the vent hole to turn it into a non-blowback, and you can get high end barrels for them (Dye, Smart Parts. Armson, just about everything else).
This guy was plagued with broken grip frames, stripped ASA's, poor reliability, and no compatability with anything else. I'd say run far and fast away...
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