Gun Model Names, Letters, and Numbers

[surprise_i'm_armed]

If PT145 is a .45
and a PT140 is a .40
Why is a PT111 a 9mm?

Shouldn't it be a PT109?

Already taken.
The only PT109 I know that's been taken is JFK's "ex-PT boat".

And, following the "place an imaginary zero" rule, wouldn't that make a PT745 a seventy round capacity gun?
In my world, I only have to use the imaginary zero rule when it fits (PT145),
not when its use is unnecessary (PT745). :-)

SIA

[stevie_d_64]

PT...

PeTe's cajun BBQ that used to be off of Hwy 3 across from Ellington Field???

[snicker]

I really miss that place...