TheNutDriver

iTrader: (1)

Hi,

Does anybody know what size allen key the bump stop grub screw on a UMI TB takes?

I can't seem to find one which fits at all. Ive tried both metric and imperial allen keys but nothing fits properly in standard sizes?

Closest seems to be 2.5mm but its close but not close enough...The screw is pretty damn tight so i can't get enough purchase on the screw without using the correct size

Thanks !