No Bar should be without some. Technically it's just a Tool to open your drink, but think of all the trouble you can get in with a spring loaded bottle cap shooter. Beer Opening should not be so fun. This Beer bottle Shaped Lid Shooter will work with many types of standard lids, twist top etc... it can be hand loaded, if shooting back becomes nessary. The traditional "dual at six paces" is always an option. All kidding aside this thing really shoots the cap, so be careful not to hurt your drinking buddy. I am not responsible and Ralphie says "don't shoot your eye-out"