Evike.com eBalls for Airsoft 40mm Gas Powered Shell Grenade Launchers (Qty: 6)

"Kind of corny. They fit too tightly. They are not very realistic. In the field, no one considers it a hit and just laugh..Kind of more like entertainment.

If you want to use balls in your grenade launcher, find some 38mm balls elsewhere. Or those easter snap-open plastic balls and fill the ball with something.
The plastic rubber-tipped missiles are more fun. There is someone on YouTube who has a 3d print design where you can load with chalk or BBs, or rice or Coffee beans, whatever, and they do not explode until they hit something.

Pros:
Nothing really
Con:
Get something else to load into your grenade launcher.
_ Experiment with stuff that doesn't harm others

What I would Change:
-buy something else or DIY something better
-If you just have to fire away with balls, get smaller 38mm ones.

"These are advertised as being lunchable from a 40 mm grenade launcher /shell. I bought the matrix m203 (I may be wrong but I believe matrix is an evike in-house brand that just rebrands other products) these balls create far too tight of a seal. They barely launch if not at all. When my shell is filled up with green gas. With red gas they will go maybe 15 ft. It is very underwhelming in the complete opposite of what I imagined. I'm hoping CO2 could be the saving Grace for these things but so far they just slip out of there like a weak fart