A former NASA engineer in California posted a video showing his latest world-changing accomplishment: the world’s largest functioning Nerf gun.

Mark Rober, a former NASA engineer who spent seven years on the Curiosity Rover project, posted this video to YouTube showing his much larger recreation of a classic Nerf pistol that shoots oversize darts distances of more than 130 yards.

Unlike your Nerf weapons, Rober’s gun is powered by a 3,000-psi paintball tank. He shoots darts made from pool noodles and toilet plungers.

Subscribe to Mark Rober’s YouTube Channel to see other great videos including how to skin a watermelon, how to make a snowball machine gun, and defrost your windshield faster than ever! He has more than 1 million subscribers, which means he doesn’t stink.