Classic.
Once you get it (IF), you will want to protect the "T" handle that is used too tighten the mount down with a piece of leather, and then really crank it down with the assistance of some pliers. Also use a drop of "Blue" Lok Tite on the threads, and you'll be good to go. (I would give $10.00 for a specially designed wrench that woult fit that "T" handle to have in my Go bag.) I want to have the ability to take it on and off easier than needing pliers.
What we really need, is a 1" Flashlight Mount from LaRue that puts the light/ laser as low to the rail as the VLTOR does. We would then have the ability to really lock the 1" tube into the mount, and have 100% repeatability that La Rue Mounts is famous for.
ARMS and other throw lever mounts I have played with just do not return to 100% POI like LaRue, and in my opinion, this is needed for a laser sight that might be used for a very "Surgically Placed" shot.
YMMV
Tack