Saw a 3913 listed as 356TSW with what appears to be a Performance Center barrel and standard 3913 magazine. Appears completely 3913 except for barrel marking visible in ejection port. VCZ7140. No info on conversion - maybe Performance Center, but not so marked.

Anyone ever see such an animal from factory or Performance Center? Wondering about whether 3913 frame is up to it and whether mag feed might be an issue?