I bought this and didn't have a gun at the time as my gun just broke (CYMA AKS74U). I ordered an M4 and wasn't sure if it would fit. When I got the gun, I immediately checked if the M4 would fit and it barely does, with the stock completely in. I don't use this gun bag for 2 guns but just for my M4 on one side and my accessories (like my mags, bb's etc.) on the other side. I'm guessing that if you take the center piece dividing the two sides, held in by velcro, you could possibly hold a bigger gun in there. I do like one thing is that is that once you get the bag open, it's secure, the flap in the middle can easily come out of your way by pulling it off of a piece of velcro. Great Buy!
I like rectangle gun bags so I bought this one and it's great!
Awesome padding, won't brake your gun on a simple bump or little drop
Flap in the middle opens for easier access
Looks like a camping bag lol (may be a con for some people)
Double Rifle Bag
Lots of Space
Carry strap and shoulder strap
Barely fits my M4
Nothing else, BUY THIS, IT'S WORTH IT!