My pre-WWI J Stevens which, if memory serves me right, was a model 325 had coil mainsprings & was hammer fired, not striker fired. Frame on it was like a cigar box, much like a 21 without them pointedty thangs. It also had push rods for cocking similar to a 21.
I don't recall the exact introduction date for the 21, but was early 30s, certainly not '41.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra