Does any recognize this brass cylinder?

[ddm]

This brass cylinder is 3" long by 5/8" in diameter. The opening on the knurled end is smooth and has an inner diameter of 0.35" for 2". The other end is threaded for 1" and has an inner diameter of 0.493. I found it in a box of miscellaneous gun parts/tools a year and a half ago but can't identify it.
Any help would be appreciated. DDM

 

[daddio202]

Just a wild guess on my part. Looks like a tool used to protect the muzzle of a barrel from a cleaning rod. ????

 

[s&wchad]

Just a wild guess on my part. Looks like a tool used to protect the muzzle of a barrel from a cleaning rod. ????

That's what I was thinking...
I've had plastic cleaning guides for Browning/Winchester rifles with their Boss system that were similar.

 

[ddm]

That's possible. There were several plastic rods for barrel protection in the same bunch of tools. But, I don't understand the purpose of the internal threads or the change in internal diameter. Thanks for your suggestion.

 

[daddio202]

At first, I thought it was a shotgun choke. Maybe .410 size. Removable/ extended chokes are a more recent development, say 1980's forward. Brass was used more prevalent before then so I doubt it.

 

[ddm]

Hadn't thought of shotgun choke tubes since previous owner had few shotguns. Still the question of why the internal threading. Thanks for your suggestion. DDM

 

[TIMETRIPPER]

I wonder if it could be a part off an old powder measure. As in the drop tube or measuring chamber.

John

 

[silicosys4]

I wonder if it could be a part off an old powder measure. As in the drop tube or measuring chamber.

John

That was my immediate thought as well. Something similar to this.

 

[s&wchad]

That's possible...
But, I don't understand the purpose of the internal threads or the change in internal diameter. Thanks for your suggestion.

The "Boss" threaded onto the end of the barrel like a brake or supressor. Semi-auto rifles can't be cleaned from the breach with a rod, so you removed the Boss, screwed the cleaning guide onto the end of the barrel and used a cleaning rod from the muzzle end. The smaller internal diameter keeps the rod centered so it doesn't damage the crown.

That's what it looks like to me, but it's still a guess.

 

[walnutred]

I think it's the removable handle for a cleaning rod.

 

[ddm]

Thank you all for your suggestions. This thing has been sitting on my workbench for more than a year and every time I see it I wonder just what it is. DDM