i ordered a new RRA rifle ( 223 wylde ) and should be getting it in the next couple weeks. It is the 20 inch predator pursuit with a flat top. I plan on using the Burris PEPR mount, with a Burris fullfield 2 E1 3x9-50 scope. For punching paper and varmint hunting at the ranges I do , I feel this should be just the ticket. Plus the 50mm scope will gather a little more light than the 40. Does anyone know if the scope and mount i plan to use will allow enough clearance between the free float tube and the bottom of the scope objective lens? I think it should but would like to make sure first. more or less i was hopeing someone out there had a similar set up with a scope the same size to tell me im not nuts.