39-2 ASP Conversion question

[3S16]

I was reading the previous post regarding the 39-2 DEVEL conversion and had a question about the maker of a similar conversion - 39-2 ASP. The original designer and builder of the ASP was Paris Theodore. At some later date, the rights were sold to Ken Parsons, who continued the conversions.
I have an ASP in excellent condition. The serial number on the donor 39-2 indicates it was built circa. 1977. That doesn't necessarily mean the the gun was converted that year.
My question: Is there a way to determine which builder performed the conversion on my ASP? The only unusual thing I see on my gun is a bright orange dot on the bottom of the grip frame, centered behind the magazine well.

 

[kwill1911]

According to this article, the guttersnipe sight on the Parsons' guns are polymer.
Cold War Mystery Pistol? The Story of the Revolutionary 9mm ASP

 

[3S16]

Thank You for the info. A magnet says I have a Theodore ASP.

 

[gmborkovic]

In addition to the Guttersnipe sight material change, the 2nd generation guns were stamped ASP and location of construction. The 1st generation were only marked on the bottom of the mag. I think?

 

[3S16]

Thank you Sir.
Mine is only marked ASP on the bottom of the two Mags. Just the original 39-2 markings are on the gun.