APS Thunder Devil CO2 Single Use BB Grenade Shell (Package: Set of 3 with Core)

"These are now the best and cheapest funtional frag grenades available in airsoft.
I was not optimistic about them actually shooting the bb's out.
Tested 2 shells. Keep in mind my cores have a hole drilled in it to blow earlier.
Filled one completely with bb's 200-300
I pull the pin and throw them while still holding the spoon. This blew up almost instantly about 2' from my hand and never reached the floor. Bb's went everywhere, none were left in the grenade
Second one i filled 1/2 way 100-150 bb's
This one made it to the floor and blew in 3sec.
Bb's flew everywhere and none remained in the shell.

"great grenades i would buy them again

"Bought 12 shells with 1 core, not sure if it was the Co2 I was using or what but there is absolutely no time before they go off. Anytime I’ve used these they blow in mid air before reaching my desired destination. I used a zip tie around the ribbed part and that helps with having a longer timer, but then the bbs don’t really come out too well and I currently have the top threads of the shell stuck in the core and I can’t get it out. I’d say these are definitely more for indoor use. They are very easy and fun to use, also very inexpensive. When using outdoors it is very easy to lose these so watch where you throw them, maybe use some bright spray paint or a little duct tape on the shell and core as sometimes the core can blow off in a different direction.
Pros:
easy to use
fun to use
Indoor use mostly
Inexpensive
Extremely loud
Cons:
Bbs don’t go very far
Short fuse/time (less than 2 seconds w/o zip tie, maybe 3 w/)
Overall 4 stars because of the short timer and bbs not going very far.

"These grenades are epic they let everyone know they're hit. Great against cheaters and campers who stay hiding behind the same tree or house all match. This mimics the real thing that they used in Vietnam, the explosion is terrific and the blast radius is impressive. Besides this thing scares the enemy to the point where they all walk off the field saying there hit, even though no one has fired at them yet. Overall this thing is a total game changer and makes the hobbie of airsoft something you want to do day and night. My final conclusion is that these grenades are a 8/10. (they are reusable except for the core which makes them a constant investment which is why they aren't perfect) other than that you cant ask for more for the price. The pros are the blast radius is great, number of bbs is amazing, the noise is deafining, and finally the simplicity is remarkable. The only CONS are that the large amount of Co2 you will use if your not careful (one 12gram cartridge per blast .50-.75)and the non reusability of the shells which forces you to constantly spend more.(sales) it is worth buying for any large event.

"They are great for fields that don't allow pyro grenades and are loud enough to get the job done. But if you are wanting to fill these with bbs and get the 10-15ft spread of more expensive and realistic airsoft grenades then you aren't going to be satisfied with these unfortunately. When I first tried them a few years ago I even bought some special .12 cheapie bbs to fill them with. Not only did they have next to no bb spread but a couple of the shells actually split so far into the plastic threads that it made the Thunder B cores unusable because I couldn't get the remaining plastic out of the Core's. So overall they are a good product as long as you are cool with not having the bb expelling feature.

"Ok, they go pop where they are supposed to. They advertise over 1 second to pop however, all the ones that I used with no powder and no BBs, they all go pop within 1 sec, and almost immediately after the spoon is released. 3 stars because they work and work well, but they work too fast.

"I was able to to use the entire package of Thunder Devils over the course of a few weeks. Sadly 4 our of 12 did not pop. This wasn't a core issue because I used different bodies and they all functioned fine. I think the premise of having a specific failure point is a cool idea, but in my experience I had too many duds to justify buying more. Maybe I just got some lemons.