choose one...

[LK-13]

Yes, I know, there are several mag fed/bottom fed markers out there, but I was assuming that since this was on AO.org that it would be mag valve based.

Yes, I am using the AGD valve train.

Not really, the sear has to be in the same place it would be on any automag.

who said anything about the sear? the sear stays where it is, then you add a piece of 4-40 threaded rod to the clevis connected to the sear;
once that is in place you can move the trigger anywhere you want.
it will need a hinge and the trigger can pull or push the new trigger rod depending on weather the trigger is forward of the normal position or behind.

Which was the point I was getting at. We aren't looking at something that you can strap a modified rail and an intelliframe on and it works. Its going to require some serious tinkering in the grip frame department to make it work.

these bodies all have the rail built into the body, no additional rail is needed.
none of these were designed to have a grip frame installed.
so yes if your 100% that you want a standard grip frame the only body that I've designed that will accept one as is,
will be the "Sterling" look-a-like.
which is still a work in progress,
as I'm still refining the design to make it lighter, look cooler, feed better and so on.

It would seem that you have grown too accustomed to the standard grip frame configuration;
I'm thinking from a real steel firearm/design/ergonomic point of view.
It came from the fact I love the style of a wood rifle stock and because I only have limited use of my left arm I need some extra thought put into the function of the gun.
and anything that makes it easier for me will work for others too.

Rumor has it that the new thumb pump gun from Metadyne may have been inspired by the pumper that CCM posted a video of on the MCB.
That CCM gun was actually tinkered together that way for me specifically,
because of my bad arm.
so there is an example of a measure to make things easier for a disabled guy that once someone chose to run with it, came up with a really cool gun.

it's all about thinking about what you have and turning it into what you want.