Allen keys up to 6mm, torx wrenches up to t20, screwdriver set, armourer's wrench, electrical tape, superglue, unjamming/cleaning rod, barrel wipes, silicone grease and oil, spare old hop rubber and nub and most importantly.... a white towel (for putting things on if I have to disassemble a gun)
Pretty much everything I need to entirely disassemble a gun and fix anything which isn't electrical/catastrophic.