Update from me, if the Doc doesn't have one for now.
Not sure if i should remove those two little nubs - with them the adapter doesn't site level with the forend of the stock as you can see below, but makes for a decent cheek weld with my optics. So i'm in two minds about that. Also the bridge between the action and the adapter measures over 6.5mm (now that i got a fancy vernier caliper for my birthday!) so i need to trim that a little with the files at work.
I've got a buddy who works at a machine shop who has promised to machine up the pistol grip adapter out of the 3"*1 1/8" alloy bar stock - i got two pieces as it was the same cost as getting one. Plus i was expecting to be doing it with a file and hacksaw, so fully expected to screw one up...
From the parts above, and the way this thing is going together, i feel like i'm just going to push on and figure my way through it. kind of like a jigsaw puzzle. I haven't got the Goop yet - for some reason that's proving not super easy to track down - i've not spent a lot of time looking for it, but definitely more than i expected. Rona doesn't stock it, at least not in the Tri-Cities as far as i can find. The two marine supply stores i've called have drawn a blank on the exact combo mentioned above too. And i'm still waiting on time to swing by Fastenal for the bolts and what not, but figured (correctly) that getting the adapter in place and the grip mount made would take some time.
Most of this has been happening in my lunch break at work - not a super gun parts friendly locale, but not unfriendly either. The stock bits and adapters are fairly innocuous looking which doesn't hurt, but it does keep progress slow.
Cost so far:
Stock - nothing it was a spare
Stormwerks Adapter - $50, free shipping to Canada (!)
A2 Grip and commercial buffer tube - $30 shipped
Magpul CTR comspec - $80 shipped
Alloy bar stock - $12 for two pieces - minimum charge at the metal supermarket!
Alloy 2" angle 3' long x2 - $60 at Rona
