needle nose pliers on leatherman worked for me yesterday when I forgot my sight tool. also I was zeroing the MBUSs for 50yds and kept getting random groupings until I noticed my rear MBUS was a little loose. I've had them on since the beginning of May and have fired 400rds or so of .223 and about 600rds of .22 through my AR. they were tight to start with but I guess loosened over time. I am afraid to ream down too hard lest I break the polymer but want to get it tight enough so that it doesn't work itself loose. did magpul publish a torque value or anything like that, I don't remember that on the instructions. also does anyone know the MOA values for the front and rear, 1/2 or 1/3 per click or turn etc.?