Rock solid case - SKB Cases SKB Single Carbine Hard Polyethylene Rifle Case w/Black Finish 2SKB4010

Terrific Case - not exactly cheap, but it's backed by a lifetime warranty. Consider it buying a piece of mind knowing your carbine is safe and secure. Only down side, the case is more narrow than expected; an AR-15 style rifle will not fit if it has both optics and a verticle forward grip.
Pros: Excellent padding, two outer latches lock
Cons: May not be wide enough to accomodate optics

This review was written in the old system and had content requirements that are different than reviews written today.