Have fun with it. The Mini action (Garand action) is hard on scopes. If you want glass? I would use 1911 buffers on both sides of your OP rod & a different gas bushing or a tune-able gas block.
The mini will launch spent brass 15 to 20 yards new out of the box.
A lot of info on all types of Mini's hear
http://www.perfectunion.com/vb/