There are a lot of excellent .22LR semi-auto rifles out there, but it's my personal opinion that the Winchester Model 63 is by far the very best. My first rifle was a M63 and I made a big mistake trading it off. I bought the one shown here in 1972 for only $100 and now it lists in the Blue Book for about $1950 in 98% condition. This one was made in 1957 and the M63 was discontinued in 1958. This has the late grooved receiver which adds a lot of value, but the main thing is it shoots great! Not bad for a rifle originally designed in 1903.