Drilling jig guide for D35-c Standard nerf spec Imperial bars

Ensure jig points “Inward” when mounting onto bars like in image; Note that its normal for front drill jig to not be centralized

With regards to the middlemost and backmost hole, Drill with a M2.9-M2.7 drill bit then use a thread maker to thread an M3 hole, You could also just drill all holes to be M3 then use M3 nuts for the holes that meant to have threads