Excellent Colt!
Quoted:
Guitar cases are a great way to camo your rifle out in public. I have been looking at an old Fender hard case....just add foam lining, cut to measure and you have a great travel case!!!
I've never been a fan of gig-bags so I never tried one with an AR, the only cases I use now are rigid foam lined SKBs (the cost of my guitars would make some AR buyers flinch). But the gig-bag is not much different in construction than the padded "tactical" soft cases. I have one from Uncle Mike's that is surprisingly good quality for the low price.
The line about Fender cases reminded me that I have a black Tolex case in the closet that I don't use because it has some (repairable) cosmetic issues. It's actually too big for my carbine but would be about right for a rifle-length AR with a fixed buttstock.
This is a stock photo of the UM tactical case (carbine size). This photo doesn't do it justice...