For about forty-five bucks you can get a light duty Simmons Universal red dot sight that can be used on the 3/8" grooves on a .22 pistol or rifle. By switching the mounting brackets from top to bottom, this sight turns into a unit that can be mounted on a standard weaver rail. Sights of this type are not what I would carry into the deer field on my shotgun, but for light duty use are a lot of fun. They easily attach to most firearms, and give beginners a good idea how much less of a problem it is to maintain a sight picture and hold for plinking or target use. Try one!