[Sailormilan2]

I have a wide base, flat top ring, gas cylinder with a punch mark like a Winchester punch mark right in the middle of the bayonet lug. It is my understanding that all Winchesters had a round top ring. Did any have punch marks, or did Winchester make any flat top ring gas cylinders?

 

[aimit]

Winchester gas cylinders do not have a punch mark or flat top rings.