Help ID this barrel.

[chromerunner]

This came out of an estate sale and im trying to figure out what it is....

barrel is 4inch long
threaded on both ends

What can i do to try and figure out what it fits?

 

[whatnickname]

Dan Wesson Revolver barrel.

 

[chromerunner]

ahhh, Never crossed my mind. Would make sence.. Ill compare it to one. Thanks!