McMillan introduced CS5 that is quite interesting. It is a bolt action rifle that shoots subsonic 200 grain .308, but the rifle can be disassembled in the stock area, and attached to Picatinny rail on receiver. It also has suppressor that attaches to the rifle. During one of the range days, my experiene has been that it is a very quiet rifle that gives very little noise signature. For civilians, all the applicable rules apply.