Justin Bieber‘s not standing on business, he’s standing on bullets … because he went shooting out in the wilderness, and took his shirt off to fire off a bunch of ammunition.

Check out these photos the singer just posted on his social media account … Justin’s in the great wide open squeezing off rounds from rifles, shotguns and sidearms.

Justin ditched his shirt for the shooting spree … and he brought some extra guns along … because, as you can see, the dude is kinda jacked underneath all those tattoos.

The Biebs brought plenty of bullets with him … just look at those huge ammo cans … and it appears he was doing a little skeet shooting, at least when he had the shotgun in his hands.

Justin’s been having himself one hell of a summer … with lots of outdoor adventures with his family and friends … and plenty of shirtless snaps.