Tyler,

The easiest effort would be to find an early 21 with double triggers. I have worked on a few throughout the years and they, the early guns, were the best made by Winchester. The ones I saw were field grade guns but had a straight grip with splinter forend, and if I recall, they were extractor guns.

The fit and finish was far better than later guns as it appears the trigger plate and top lever were polished in place. The later guns appear as though the parts were polished separately thus rounding the fitting edges.

Hope this helps.