ATF and the SBR stuff.
http://tacticalshit.com/atf-rules-shockw...s-warning/
http://shockwavetechnologies.com/site/?p=1724
http://tacticalshit.com/atf-rules-shockw...s-warning/
http://shockwavetechnologies.com/site/?p=1724
http://tacticalshit.com/atf-rules-shockw...s-warning/
http://shockwavetechnologies.com/site/?p=1724