recever problems

[sean20012]

hi all, have run in to a little problem on a build am doing i have used a g&g v2 ggbr drop in box in a guarder colt recever only to find there is no hole for the bolt catch grub screw to fit, is it possable to drill the recever to take the grub screw or am i just going to have to lose the bolt hold function on the gearbox,

thanks in advance sean