Took it out of the stock, safety is pretty easy, pull spring forward, remove safety, to replace, push spring forward from inside, catch with small allen key, replace safety. I found that the upper screw on the trigger housing had backed out causing my bolt issue, I put it back in about 1/4 turn and the bolt locks up just fine. All surfaces look smooth and burr free, don't see any wear or rust. So my bolt now locks back just fine, no cracks in housing. But I'm still getting light strikes. Something to do with the hammer spring maybe? Lol of course I emptied the gun to do all this, and pumping it back up the gauge on my pump stopped working.... It's going to be one of those weeks isn't it?