I made mine out of an old plastic case. I have a night vision case attached to my rear rack. I layed the case up againist the side on a 45+ or minus angel. put down the right rear peg and set the forward feet of the case so they catch on it. Drilled two holes through the top of the case and the inside of the gun case.I attach the case to the nite vision case mounted on the bike with two 1" screws and two large flat washers, wing nuts and strap the bottom with a rubber bunge ,away I go..to the woods or gun club! It carries a over and under or AK with mods just fine. I also have a rod tube made out of pvc pipe that attaches to the other side by way of two fence straps. Painted satin black they both do the job very well . My shotgun has a value higher than my bike. I did just spend $1200.00 in new mods for my baby! KLR. and PTM who is running a special this month! New pipe ,jet kit light upgrade ,stator,grips, gards ,dohicky,etc. I am on the list for a PTM seat. I may need tech support and super vision! As I can't see and can only rebuild Holleys ! I would post pics but have no batteries. Soory Thumbs I ramble!YOU JUST CAN'T GO ON A HARLEY!