What's this barrel tip

[cougar20th]

Received this with a gun, never really cared what it was when buying the gun. Thought it was a DW whip tip. It is threaded as freak tip. But it doesn't seem to match.

Any thoughts as to what it is.

[Chaos]

Stiffi

[Moodog]

Looks like a stiffi tip

[automeister]

I agree, Stiffi

[cougar20th]

Awseome, I was thinking that but couldn't find a picture to verify against.