Have you tried it on a gun? It is sound activated put it on the gun let it rip and report back - be sure to ALWAYS read the manual with everything you buy.
EDIT: not trying to rip or flame just have a buddy who plays and never reads his manuals which leads to ALOT of problems on the field.. saves ya headaches
MOWING FACES WITH A KARNIVOR PRO
WTB Tampa Bay Damage NT11