Need help on figuring out a barrel that's in a Taurus pistol

[FlSwampRat]

Took this Taurus Model: PT 24/7 that came out of pawn down for cleaning before putting it out for sale. Never saw a barrel with this stamping. Figured I'd hit the Encyclopedia of THR just our of my own curiousity.
Other than the *QBN there are, as you can see, no stampings whatever.

 

[Robbins290]

Did you call taurus? I did a quick google search and came up with nothing.

 

[FlSwampRat]

Did you call taurus? I did a quick google search and came up with nothing.

Yeah, got nothing when I asked Mr Google myself.
I've field stripped and cleaned a lot of Taurus guns over the years, never saw that stamping before.

 

[Robbins290]

I am surprised no one chimed in yet. There is a huge wealth of knowledge in this forum.

 

[AK103K]

Its obviously a "Q" post. Now all you have to do, is figure out what its telling you.

 

[Steel Hayes]

What length is the barrel and was it
a 24/7 pro(.40 or .45)?

 

[FlSwampRat]

What length is the barrel and was it
a 24/7 pro(.40 or .45)?

4.2" barrel.

 

[Steel Hayes]

It’s definitely a factory barrel.
The only aftermarket custom barrels are from Jarvis and they only produce for the pt92 and 99.