So i have been looking for a long time for a CLAMP ON .936 gas block that is adjustable WITH THE SCREW SECURED. In other words, i know JP has a clamp on adjustable but i dont like having to use loctite. Plus, it is not real low profile. So, last week when SLR came out with their new "Sentry" gas blocks, i bought one. They are a little more money but well worth it. Check out the pics. This thing is tiny. .936 clamp on.