First the props
I got my 45m out of Jail a few weeks ago and had ordered the 3lug from a different vendor. It wouldn't thread onto the can so I called AAC got an address, shipped it off and got a replacement a week later! Awesome and no hassle!
Now 3 questions:
#1 the 3 lug mount obviously uses a spring for lug/piston retention (for my mp5 clones) and I bought a fixed barrel spacer and understand it to be used on a fixed barrel gun to avoid potential damage/cycling issues. Obviously a 3 lug needs the spring, but why and how is the 3 lug mounting different than if I used a piston and the threads to mount it on the same gun with a fixed spacer?
#2 I have 3 pistons for it and the 1/2-28 didn't come with an Oring, should it have one and what size/material should be used?
#3 the 14.5-1LH is very loose and only goes on about 2 threads onto my USP 40 barrel. Am I missing something?
I haven't shot it yet since mounting has been an issue on the 2 pistons I have barrels for and I don't want to blow my first can on the first range trip.
Any help on any of these questions would be great.