YouTube - AirsoftPRESS Video: DEEPFIRE new hopup system for M4 AEG
Some people say the PTW hopups are the best...some say it's the worst. Mine works really well...but I've only every had the on and it was 3 cushioned by McGuyver (a la Tackelberry).
So...not saying this is the best/worst/other....it's just neat.
(ps...I thought Bean was supposed to post this stuff...)
Tys