
Originally Posted by
rsilvers
That is a nice rifle. Is the JP block steel? Does the gas set screw ever move on its own? I have one but yet don't have experience with it. I also had an MGI adjustable gas tube but decided the screw was so loose I could never trust it. Also it seemed like a fracture point in the tube. When I called their tech support the guy did not know what class-2 vs class-3 threads meant so I decided they were not qualified to design such a thing and ditched the part.
Thanks. Yes it's a stainless steel gas block with 3 set screws (the rear most one is dimpled into the barrel) all three had Rocksett applied to them. I also pinned the gas block using a milling machine to machine a flat and drilled it for a single taper pin and reamed the hole by hand. The adjustment screw doesn't turn on it's own. I used blue loctite on it which sure the heat brakes it down but it makes the screw fit very tight in the gas block. The barrel was a SPR profile but I turned it down to .650" under the rail and sand blasted it. This way is a little more front heavy.
Chief Armorer for Elite Shooting Sports in Manassas VA
Chief Armorer for Corp Arms (FFL 07-08/SOT 02)
Bookmarks