I have a new to me model 4 takedown with a round barrel, and I'm trying to locate the correct rear sight. I have what I believe is a sight for a model 12, but have had some input that it may be correct. Any guidance is greatly appreciated. Thanks

I got the No. 4 about four months ago and forgot about it. I think it is ~ 1896, but I still had to fill out form 4473.

Your # 4 wears the sight I've always seen on originals.

The one on the OP's is actually a lot more user friendly, in terms of being able to tune and tweak.

AVOID Stingers, Velocitors, etc,....e.g. Super Velocity ammunition, in those old things,....stick with standard or subsonics , and enjoy having both eyes.

GTC