Front optic guard. An aluminum frame that fits over the front of the optic, with a hard polymer plate protecting the front lens of the scope. The guard is intended for T1 and T2 type scopes from various manufacturers, but of course it is also suitable for other scopes / lights with a tube diameter of 29 - 29.3 mm. The package includes O-rings, which can be added to make the guard fit tightly over the tube.