creekchub,
High Standard Flite-King
First Model 1953-58 weight; 26oz
Second Model 1958-66 weight; 24 oz.
Same as Sport-King except with aluminum alloy frame and slide and in .22 Short.
I guess that they thought the aluminum (light-weight) components would only handle a .22 Short. Anyway, they don't seem to bring any more $ than the standard steel.