Dpms bolt catch screw

[gonec5]

Does anyone know what tap to use for the bolt catch screw on the DPMS receiver?

Thanks

[survivalshop]

Now your going to make me look , I have a couple extra screws ,I can see what they are .

[IM_JOHNNYV]

Does anyone know what tap to use for the bolt catch screw on the DPMS receiver?

Thanks

On my AR10 I used a 6 - 32. The bolt catch screw was from SI Defense and I had to make a 4" extension for the tap