ACC Chassis - ARCA Stops

[I Dont Care About You]

I just bought a custom built rifle with an ACC chassis.

The ARCA rail under the fore end is drilled, as if to allow stops to be installed, but none of the holes are threaded.

I have an MDT accessory (bolt on) ARCA rail on another rifle and that rail has threaded stop holes.

So how are stops installed in the ACC chassis ARCA rail? If they aren't, what the hell are all those nicely spaced holes for and why does a high end chassis not have the means to install rail stops?

 

[Bpenhall]

M-lock

 

[I Dont Care About You]

M-lock

There are no MLok slots at the back end of the ARCA rail.

There is no need to drill 50 little holes in the ARCA rail if the method of installing a stop is an MLok slot.

I'm not looking for a barricade stop. I am looking for a little screw that stops ARCA clamp accessories from sliding beyond a specific range.