Front leak

[purplemag]

Ok, air up the mag - get a leak down the barrel. Take a shot, shoots fine and the leak stops. What could cause this???

[Chronobreak]

lvlX wrong carrier size? only first shot? spacing between triifer sear rod etc?

[purplemag]

yup the leak stops completely after the first shot.
It is like something is not seating right.
Someone c'mon help a guy out!
LV10 installed, .5 carrier, 3 shims. Regular on/off assembly for retro valve.

[purplemag]

Ok, fixed. Changed out the on/off o-ring, good to go. Either the one I had was bad or may have been the wrong one somehow.