I've seen plenty of those APILAS's being fired, not the live ones but the exercise versions of it, dunno if there's much difference. When it comes to noice level the APILAS is absolutely horrible and yeah the blast is freaking huge. Effective range is greatly limited but its made up in raw firepower. When I was in army our APILAS gunners were told it defeats modern battle tanks from its effective range, its just that nobody mentioned what battle tanks
