I've been killed by my trophy system before =/

I don't know how it works. Someone shot an xm25 and the damn thing blew me up.

Kill feed said the trophy system killed me and the xm25 guy didn't get the kill lol

the trophy system is an APS (Active Protection System). It shoots "pellets", similar to those found in shotgun shells, into the air to intercept incomming projectiles, such as predator missiles, grenades, etc...so If a player sits close to it, he/she can be hit by the pellets.

I've been on the receiving end of this before.  Someone placed a trophy system down and as I was running past, the enemy threw a flash or nade (something that made it go off) and I died from the damn thing.  Must be the explosion it releases and being to close.  I've been killed by my own, in HC, from a team mate running past it when the enemy threw a nade, my TS went off and destroyed the nade but must've been close enough to cause damage to my team mate.  Needless to say I ended up dying.

That being said it is a great weapon in this game and very useful. 

The Trophy System does the opposite for me. Instead of blocking projectiles that come for me, it kills me instead. Just yesterday, someone threw a semtex at me and the Trophy System tried to shoot it, but instead, it ended up shooting me.