Brand new, just got it in the mail today. Changed plans. $125 shipped, paypal preferred. I'll cover fees and shipping. This is what they call their "sub guage" pistol grip. It should fit their 28ga and 410 for sure, not sure about the 20ga.
(https://i.ibb.co/VSwZYvq/Tri-Star-1.png)
(https://i.ibb.co/J54zh9B/Tristar-2.png)
Send it to PA. Pm inbound.