Fulcrum meteorite cap grenade.

[Wavey_Gravey]

Anybody tried these?

20p a pop per throw and they’re pretty cheap to buy / print in the first place.

 

[Skullchewer]

Interesting. Passed it on to my buddy with a 3D printer. 

 

[hitmanNo2]

There's a few users in the "What have you just 3D printed..." thread.  They seem happy enough with them for the most part.