i recently purchase a 16" RRA predator pursuit. the rifle measures 34.5" long. i have been looking at pelican storm cases and can't decide which size to get. the im3100 is 36.5" long and the 3200 is 44" long on the inside. 1" of clearance on either end of the gun doesn't seem like enough to me, but 44" seems too long. however, the 44" would give me a little extra room for bipod and other accessories. what do yall think i should get? what size cases do yall have for your ARs? thanks