Have you had any problems with malfunctions with this set up? Heard they are high brass or no brass weapons! The shock wave is a fun shotty to drive around in cqb conditions. Ive never been a fan of the shotgun for SD/HD. I know the pattern at 6 to 10 yrds is pretty tight but like knowing exactly what that round will do and where it goes. They are good at making a canoe rack!