Heh, in my house theres been guns around since i was like 4 so getting something that shot paint was easy. the only thing my dad didnt want was paint everywhere.
1. treat it like a real gun that can kill(unless ure in a field or safe place cuz shooting eachother is the point of the game) which includes saftey,ungasses,unloaded, never point at peeps unless ure in a designated area with designated safty gear on.
2. buy a trigger lock thats made for a real gun thatll make him feel better.
3. make rues +consequences