The factory 5 6.8 mags are alot wider, so no they aren't even close. The cheapest route would be sell your 14, spend the extra couple hundred and just buy a 6.8. Plus, resale value is alot better for factory stock rifles as opposed to conversions. Don't be like me and end up with a conversion (-30 to 6.5 Grendel in my case) that doesn't work that well, cost a fortune and that no one will buy from you.