Airsoft Sound Amplifier

A fairly simple amplifier device for airsoft guns with 14mm threaded barrels. It should print cleanly without a brim, raft or supports.
This will convert the sound of the airsoft shot from a puff or thud into a higher pitch snap or pop, much like the commercially available versions (madbull/socom gear KX3 and KFH amplifiers). Effects will be different based on how much air the airsoft gun is putting out, and where the barrel ends.
For reference, my test platform has a Woverine airsoft HPA eng