Pump Kit Identification

[alpha_q_up23]

Long story short I got a pump kit in a trade and I originally thought the kit was a Cerebus pump kit but upon further inspection it looks.... well..... not quite like any of the cerberus kits I have.
https://i.imgur.com/RTBoGyZ.jpegm
https://i.imgur.com/qwIasya.jpegm


More picture here
https://imgur.com/a/dzoSQjG

[captian pinky]

The base and rod look like a gen 1 agd kit with maybe a cerberus handle.

[alpha_q_up23]

Neat, I kinda felt it was an early kit cause the handle looks almost exact but the guide rod is all different also the aluminum handle looks as if it was once threaded and then milled/ground away, was a threaded pump rod something that older kits had?