Urx4/carbine fsb

I'm looking at shaving my fsb to fit under a urx4. Is there room to tap in the taper pins or do I need to go with a set screw gas block?

Just did a urx4 cutout with my buddy, and we had to drill holes in the rail for the pins. His was a carbine length gas system, so if you are using a mid length (or other) that may affect keymod slot spacing.

Thanks. I'm looking at carbine gas system and mlok urx4