Pull back to lock, slap forward to go

This is a full DIY 3d printed gun I'm working on, called the "Beta Wamali", which is twinkie-eating-american phonetics for how you'd say, approximately, "WASSUP" in Burmese.

On a technical level, this is NOT A GUN by virtue of not being a gun YET, but as completed, will be a 9x19 blowback pistol caliber carbine (legally a pistol, which I am allowed to own, all of this is legal) (sorry but everybody asks). the barrel is made of threaded 3/4" rod, the picatinny rail at the top has a 1/4"x20 threaded rod running the length of it, the bolt carrier group is made from threaded rod, flat steel bar, and standard sized cast iron pipe- all as you'd get at the hardware store, or the junk yard, or from the corner of nearly any garage.

This is still a work in progress, but videos of it firing will be coming soon, and files will be available for download.