Originally Posted by Eternal Acacia
thread sealer/teflon tape it. leaking down the barrel is valve
I love it!!! Short and sweet. Everything Eternal said is correct in my book.
This is the first time I have heard about the bolt screw slowly unscrewing itself. lol I can't see how it shot out at you unless the pin was pulled up because the screw only holds in the ball bearing and spring holding the pin from falling out of the bolt, but anyway teflon tape works great for that job remember you don't want to screw it in so far that its hard to pulled up the bolt pin.
For the air down the barrel, If it is down the barrel then it is the valve in the gun. The valve pin isn't sealing and may need some breaking in before it seals correctly since its made of plastic. If your not sure then read the manual on doing a disassembled air up to isolate the leak. Don't unscrew the allen screw holding the valve while air'd up though. I REPEAT DONT UNSCREW THE ALLEN screw holding the valve. Hope that helps.