Mar 10 2004
I took apart a magazine today, and quickly went to work improving flow! I used a dremel tool with a carbide straight bit and ported the top (where the valve is) and used a 3/16th's bit to drill into the expansion chamber. I just ported it until I couldn't see an obstruction through the chamber. Turning the screw up will make it kick a little and combine with this, it has a recoil you can notice! It was fairly easy, took less than an hour, with a final polishing it looks like it belongs on a motor.