rsaun867 wrote:OK my bad, it is actualy a gas block. It just doesn't serve as the gas block block on this rifle. I removed the skrews and "wacked" it a few times pretty hard with a rubber mallet. Still won't break loose. Anyone have any Ideas? Kroil? Thanks
The blocks are fortified with a Loc-Tite material. Bushmaster is the only one to do this and it is a great thing to do, if assuring all the gas goes down the tube is the goal, thus eliminating the block as a possible cause for why the bolt might be short stroking.
All loc-tite breaks down at 400 degrees temp. So, a "Little" heat is necessary, but just a LITTLE and don't use anything more than a propane torch. Keep the torch moving all around the block, all the while tapping on the block, so when it frees-up you can immediately stop the heating process.
The useless gas block, is not so useless if you need more gas or different timing, which will be necessary if you hit the port pressure wall and start short stroking. My recommendations are, to just leave it on, it's not hurting anything and if you get into the high end of experimenting with the powders and performance curves, you'll very soon learn why you may need it..t