I have an Investarms .50 cal rifle. I need the screw that screws the thimble to the barrel. Does anyone know what the screw size is for this rifle? Thanks for any help><> ole scratch
I don't know what size the screw is offhand, but I'm sure it's metric.

If it were me,.... I'd take the screw out of the other thimble, and take it to my local hardware store to see if they can match it.
