Fulcrum shows the 3D-Printed landmine for airsof tuse that he did himself and you can get the plans here... "In this airsoft video, we take a look at my new airsoft landmine which I designed and 3D-printed myself, known as the Rattlesnake!

Designed to use most airsoft 40mm grenade shells, this #airsoftlandmine allows you to use your existing airsoft grenade launcher shells to create a mock explosion when trodden on. Made of only 3 3D-printed parts and a few screws, this 3D-printed airsoft land mine will certainly scare the crap out of anyone who happens to disturb it!"