Hey Stick... do you know if a MOE handguard will fit onto a carbine with a PWS piston system? I am not sure if there is enough top clearance, or if some modification to the handguard around the gas block would be needed. You are the man with all the access. I may be the only person in the nation who may want a piston gun and not a rail system, but I am curious if it is even possible. Thanks in advance, stick.