Curious as to what set up is needed to connect and regulate pressure from this SCBA tank to a gun?
Looks more like a CGA346 fitting, not a 347. The threaded "nipple" on the tank looks shorter than the 347. A CGA347 tank nipple is 22.6mm long & O.D. is 20.8mm (approx).
How long/wide is yours (no double entendre intended all of you with your mind in the gutter!).