The Airsoft Innovations Cyclone Grenade is the newest development in the world of airsoft grenades. A reusable impact airsoft grenade, just reload with gas and BBs each time you want to use it. You need nothing else in order to use this grenade over and over again. Simply unscrew the bottom and hand load with BBs dumped in. Load the green gas, or propane, and throw this bad boy at the enemy! Kids will cry, man babies will panic. Impact style, so it explodes on a hard impact (not timer).Measures 4.75 x 2.0 inches. Can fit in M4 mag pouches, M14 (best fit), and utility pouches. Will not fit in flash bang, standard grenade, pistol, or flashlight pouches.2016 Update: These are the 2nd version with reinforced and re-engineered components for improved durability. See our video on how to align and load the grenade properly. A common mistake is not tightening the bottom base properly enough; you really have to put some muscle into it: 1. Align the notch with the bottom (pop outer plastic ring in/out for adjustment). 2. Clockwise tighten the base really tight. Put some strength into it. Don't worry, you won't break it. It's really tough, but this assures the gas stays in; bbs fly out.