Both Parker and winchester made trap guns utilizing their side bys. Go on the link for Guns International, which is one of the sponsors and advertisers, and you will see them. They fetch a pretty penny. There are a fair amount of Model 21s out there and a few Parkers. A fair amout of the 21 trap guns have straight gripped stocks, instead of pistol grips. Rather a unique combination.

Colin L. Kendall