Silencer Foam problem
I got my vfc sr16 recently and a silencer filled with foam. I was testing the other day and all of a sudden I see couple black ish stuff on the floor. Then I realized it's the foam inside of the silencer I bought. So here's the question, is it normal that the foam will be shot out of the silencer? Is there any silencer w/o foam for M4? What is the foam for? Thanks.