ok to the guy who says its a nail you are dumb for using nail guns without a safety or a working one safety... i used to frame houses and shot my self through the hand and the finger but just because i was being careless nails dont hurt goin or comin out its about five minutes afterwards that gets ya of course i alwyas pulled them out right away never hit a bone yet but i had a boss who stapled his foot to the roof when we were sheeting it i had to pull the staple for him it was deffinately in the bone on one side and he other was in the wood he was stuck to the roof he almost passed out when i did it luckily we were on a 6/12 so i didnt have trouble keeping him up on the roof then i had to take him to the hospital ..... so IMO the only way to shoot yourself is to be careless