Yes, this QD mount is fully compatible with the ThOR 5 LRF thermal riflescopes.
Please contact ATN's customer service, and we can assist you with the replacement screws.
The ATN Quick Detach Scope Mount will only mount to picatinny flattop rails, it is not compatible with weaver rails.
Yes, the ATN Quick Detach Scope Mount will attach to the flattop picatinny rail on your Ruger Precision Rifle.
The ATN Scope Mounting System Quick Detach 1-PC Base & Ring Combo mounts to picatinny rail. It can be mounted to a Ruger M77 if the rifle has a picatinny scope base. However, it will sit high on that rifle and I recommend using a set of 30mm diameter rings instead.
The ATN Scope Mounting System Quick Detach 1-PC Base & Ring Combo could be used to mount another scope with a 30mm diameter main tube. However, the spacing of the rings may not be compatible with some scopes.
The ATN Scope Mounting System Quick Detach 1-PC Base & Ring Combo will work with the ATN Professional 5x33L Illuminated Reticle Rifle Scope.
From what information I could find the ATN Scope Mounting System Quick Detach 1-PC Base & Ring Combo has a centerline height of about 1.5" high.
The ATN Scope Mounting System Quick Detach 1-PC Base & Rings have 30mm diameter rings.
The ATN Scope Mounting System Quick Detach 1-PC Base & Ring Combo has 30mm diameter rings.