Alright this is probably gonna be a lengthy post but dont worry I took lots of pics to keep you happy.
we all pretty much know the G24 is the gold standard in mounts. IMO the Norotos DDA is the gold standard of "arms" because its rock solid and not a plastic arm that flexes.
But we all also (or should by now) know that wilcox/wilcox and norotos/norotos are the turn key solutions for mounts and arms.
But I wanted to use my beloved DDA with a G24, I wanted the best of both worlds.
I probably have spent several hours googling, trying to get pictures, measurements, whatever trying to figure out why they dont play together.
Eventually I said screw it and bought a G24 because I intend to buy RNVG's down the road anyway so it isnt a total waste.
I broke out my calipers to "reverse engineer" things and figure out whats going on since it seems like nobody else on the internet has really done it, so here ya go!
First the shoesthe adjustable side depth
non adjustable depth
adjustable width
non adjustable width
adjustable tooth
non adjustable tooth
so looking at this the non adjustable shoe is actually smaller than the fixed shoe, yet the fixed shoe locks in.
So lets check out whats really going on here
left side of the wilcox with the adjustable shoe pushed in as hard as I can - plenty of clearance
right side of the wilcox with adjustable shoe - we have a picture of the mount bottoming out on the base of the adjustable shoe, this is exactly where you need 1-2 strokes of a file
here is the pvs-15/18 socket showing the clearance on both sides between the mount and bottom of the adjustable shoe
Now... take a look at this..
no your eyes are not fooling you. The right side of the G24 is actually thicker than the left side interface, this is why the G24 bottoms out and hits the base of the adjustable portion on the DDA
so lets measure it
right side
left side
And now we know exactly what is going on. So those of you who want to use a DDA with a G24 you know exactly what you need to hit with a file for a few strokes.
go slowly with the file on the DDA. the socket on the PVS-15/18 has a spring loaded section to give a solid lockup on shoes if they are slightly different sizes.
The G24 does not have this so I would take it one stroke at a time with the file to ensure a tight fit.
ETA: I should also add you always modify the cheapest part. You file the base of the DDA, not the G24