12-02-2021, 10:33 PM
Yeah, I already went through it, blew through the gas tube and had flow at the block. Blew through the key with bolt in, no flow. I pulled the bolt blew again and had flow. I like to think I'm pretty good with ar's. The only thing I noticed is the tube doesn't have the normal obvious shoulder at the key end. I checked the fit in the key, it wasn't loose but I've never had the need to check that before so I have no reference and I really don't want to pull any of my others apart to check and mess with accuracy. I didn't see any carbon on the tube near the key like it was leaking back though. I've been dealing with these things for 20 years and this has me stumped. The problem is I can't shoot that often as its an hour drive from home.