Plus cylinder in SSR

[JFrames4ever]

Theoretically a seven shot cylinder can be installed in an S & W 686 SSR. Besides the cylinder, ratchet and extractor star, do you need any other parts. I'd like to be able to switch back and forth between the 6 and seven shot cylinders. Oh, and I guess maybe the hand.

 

[Protocall_Design]

See post #9 in 686 to 696 conversion? thread.