what caliber is your low pro thinking of getting oneIf you go to savagearms.com you will get your answer. I own two Savages, one is the Mod 12 Low Pro varmint and the other is a Mark II FV in 22lr. Both are very free floating. I've not tried it, but I'm willing to bet I can get a credit card to the barrel nut. They are very open. Both shoot sub MOA if I do my part and have a good load for my heavy rifle. My 22lr shoots PMC very well.