||So, i just bought 24 shells and 2 grenades a little while ago. I've only set off 3 of them, and every single one has had no problems... 'cept one. the lower cap has an annoying tendency to pop off and go flying. so i'd recommend buying a couple extra cap sets. i think the problem is that the seam on the bottom breaks and because of that the threaded lower part of the shell gets all messed up.
Loud as heck.
Very good for an intimidation factor, specially if no one else has grendades.
quite a solid build.
easy to set, and set off
VERY consistent 4 or so second timer.
simple maintenance and lots of spare parts.
duds are non-existent if you tighten everything up.
Lower cap often shoots off. (sometimes not too far so you can find it, but i've lost one because of this)
costs about a buck fifty every time you set one off.... but who cares? it's a flipping grenade.
definitely recommend this awesome thing.
Rating: [5 of 5 Stars!]