So I tried dissambly of the mini 14 as you would normally: cocked the action, safety on, pop the guard, trigger group doesn't come out. After more research I actually found someone in a forum whom actually bought one in the late 70s.
"I have one of the first Bain and Davis Mini-14 conversions which I ordered just after I read this article back in '77. It was further modified later by B&D with a fatter contour Douglas barrel and glass bedded at the fore arm. The trigger was later further modified by Connecticut Precision. I later replaced the B-square with a vintage Leupold Mini-14 one piece mount; the work was done by George Benzinger formerly of Griffin and Howe. It now wears Burris signature rings and inserts fitted with a Sightron 1.5-6x42 scope. It was and is a stunning sporting weapon. It also shoots; off a bench rest it groups at m.o.a. with reloaded PMC brass topped with Nosler 55g ballistic tips. As one might suspect, this carbine is a bit heavy; with a full five round magazine it weighs in a about 9-1/2 lbs. Because it's only about 37-1/2" long, it still feels very handy in the field and not a burden over long hikes." - Nikkolom on Perfect Union
If mine is also glass bedded it might explain why it would dissamble? Thoughts?