You are right that it is just noise, but some sites might take issue with the notion of live blanks being chucked about and left sitting there, even though I should think there's little chance of an accidental detonation from one in the mag.
There's that risk from all bfgs though, there's stories of all types not going off. I've had an oshiboom for example chucked into a room I've been in and not go off.
There's only one firing pin so once the first round has been used it's safe anyway. There's also a secondary "transit pin" that can be used to make the grenade completely safe when in transit between games. I'm intrigued but as with all things Incentive it's not cheap - £115 preorder at the minute!
