Grenade that looks like a WW2 Mark II grenade. It has a pin, spoon and body, just like a real grenade. Uses gas to pop the outer shells open (reusable) and eject BBs. The timing on the grenade can be adjusted to when you want it to blow.
Reusable. Uses cheaper gas (green/propane) to get the explosive effect. Adjustable timing.
The BBs have about a 5 foot radius, at best.
The upper part of the body is plastic and very fragile, so be careful when tossing the nade into a room. The timing is very unpredictable and has basically two times, short and long. You just have to guess how long those are because I don't know as it is completely random how it blows up.
Use of green/propane gas means limited temperature ranges it can operate in. The warmer it is, the faster it will blow. The colder it is, it won't blow, except in your hands.
If you fill it with BBs, they sound like maracas.
They leak the gas. So, many times, they will not blow at all.
If they are used outside, you WILL loose parts because the spoon is green, the skins (unless you use orange) are green. You will have to customize the body with fishing line to keep the parts together.
The O rings are prone to flying out of the grenade body, thus breaking the grenade.
Beyond that, the grenades are horrible and not worth the money. Though they are a good novelty and great to scare your friends to death when you drop it in the middle of a meeting.