I've had one for a number of years. I shoot bolt guns, one of which is an RPR which is a similar frame as an AR. With the longer barrels and silencers they are to long to carry in the position shown in your picture without the muzzle hitting the floor, but we can carry them muzzle up just fine. In the Ranger crew no adjustment is needed but in a single cab with the long guns I have a block of high density foam cut to put in between the Seizmik and the seat back to make them stand up straighter and not hit the back window. It is very handy to just unbuckle it and move it to a pickup when needed. I would sure buy another if the need arises. The only major thing I wish they would do differently is put another inch between guns. The big scopes set very near each other. We simply put a small sponge in between the scopes and problem solved. They do rock from side to side a little in rough ground but that has never been a problem.
I also have a Kolpin vertical 2 gun mount that I used on a 900XP. It took quite a bit of retrofitting to make it solid and secure enough to suit me. I had to support it back to the seat, drill holes in the floor, remove the underbelly and add support under the floor. I just didn't think the poly floor would hold up to 25 pounds of gun swaying back and forth on rough ground. It was good once I did these things but semi perpermanent..
