I recently purchased a l7 he spec-r/g4 bolt and i got it on 4/1 and I've been having issues with it. When I first put the bolt in it started to leak out of the back cap (around the threads). After one or two shots it stopped. Then i took the bolt out and put it back in only this time it continued to leak and wouldn't stop. Then i took it out a third time and pushed the bolt completely forward then gassed it up and it stopped after leaking for about 1 second. I replaced the oring on the back near the threads and it still leaked. I was operating at 115-120 psi (a shop compressor because i had no air left) so i'm assuming that if i brought it up to 150-160 psi then it would seal worse. Has anyone had this issue before and do you guys have any suggestions?
Also i noticed there is a very small indentation in the shape of a rectangle that spans across the o-ring groove. Here are some pictures:
I don't think that this is the issue though because the oring sticks farther up so it should seal on the gun and the can of the bolt and nowhere else.