ok so i dont have a picture or video or proof so dont start that crap sayin proof or it didnt happen cuz i have no reason to lie, anyway i was playing an escort mission and was standing right next to the bot and saw a guy up ahead (a.i. by the way not real person), anyway thought i would chuck a nade at him. apparently he was thinking the exact same thing cuz our nades hit mid air and went sideways. i had to pause cuz i was laughing so hard ive been gaming for almost 12 years now and i dont think i can recall that ever happening in a single one of them. i dont know if anyone else has had something like this, if this is a glitch or if SD are just amazing programmers.lol just thought i would share.

i was playing offense on Security Tower, and using the tower MG to cover the VIP when all of a sudden i got the achievement. apparently someone threw a grenade at him and my MG shoot it out of the sky, killing a facist Security.

Pics or it didn't happen.

There is an achievement that is called something similar to your title. It's killing an enemy by shooting a grenade. I got it but have no idea by what. I'm pretty sure it's in the programming and it makes sense.

I shot a grenade out of the air with a rocket launcher in Halo 3

i would say fantastic job done due to the hitboxes, why should they go through each other?

Since the gernades are able to be shot, they have to be an object that can come in contact with another and have physics. Another way of saying this is when bullets hit another bullet they won't bounce off because they weren't made the same way as gernades. Just like in Halo Reach where you can shoot nades, Brink nades have a solidness to them. I svck at explaining but I hope this anwsers your question if this is a bug/programming error.

ill have to see if i have that achievement. i have shot my own grenades dont know if i have shot an enemies though? im gonna be tryin now though thats for sure!

yes it does thank you!

the very first bullet i shot with the light riffle someone threw a grenade in the air from below me and it arced into my line of sight and when i shot someone i all of the sudden saw an explosion and i thought that it was my gun xD

i dont even know what i thought i did but it wasn't until someone said "LOL who shot my grenade" that i understood what happened

Belive it or not I had a extremly similar experience.

I threw a caltrop toward a enemy group, and saw it hit another grenade in midair.

I was also surprised to see how many things are "solid" in Brinks programming, some thing else I also enjoy is that holes in walls and blockades are actually holes not just textures if you get what I'm saying.

Here's a video of someone doing it.

6:57. http://www.youtube.com/watch?v=grySu_K18FQ&feature=relmfu

thank you for that link!