Next smallest to the X frame.
N
N frame 357 Magnum
The Model 13 is on a K frame.
An N frame .357 Magnum revolver.
The frame size of a Smith and Wesson model 66 is K.
The smith and Wesson model 10 has the K service frame.
The Model 13 is built on the K frame regardless of the N marking.
It is a K frame. The original .357 Magnum was an N frame (Model 27). The K frame is smaller and lighter.
The M19 is a medium size K-frame. The M28 is a large size N-frame, which was also used in producing the 41 and 44 magnums.
The frame.
The Smith and Wesson K frame revolvers were made from 1946-1983.
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