Mattv2099 puts in the recoil spring upgrade kit and tests it out:
WOW! 4 full magazines… I’m seriously impressed considering it couldn’t even get through 3 shots in his previous tests without jamming.
I still cringe every time I see someone charge one of these things… what an “interesting” design.
Thoughts? Would operate with a Zip gun? Even get a few tax stamps to mount them all around your AR15 quadrail?