The GS2 is built as a back pack with adjustable shoulder harness and removable waist belt. It also incorporates a built in gun scabbard with a cover. It has compression straps to compress your load, with the option of compressing just your load or also the scabbard which rides right behind you between your back and the load. I have both the tac-ops drag bag (small) and a GunSlinger 2. I find that if I'm traveling or just going to the range, I'll grab the tac-ops. If I'm going to be hauling and doing a lot of walking, the GS2. The tac-ops is a great bag. I bought it primarily because I did not want a hard case, and it does the job in spades for my uses. That said, if I had to do it all over again and just wanted one or the other, I'd probably go the GS2 route. Both are great bags, but I find myself using the GS2 much more than the tac-ops. I'll second the above recommendation on contacting Ceylon at Deltaoutdoorsman.com for an GS2.