Gun control

Ever since Lurch became one of the first visitors here, I have followed the gun control debate (such as it is) quite closely. I finished Joyce Lee Malcolm yesterday, and enjoyed the piece in last weekend's Telegraph on the same subject.

I've done some digging and as I understand it now, the Metric Martyrs case has shown that the Bill of Rights cannot be repealed by implication because it is a constitutional act. If this is right then the various firearms acts are illegal because they breach the Bill of Rights.

Am I right? And if so, then are we just awaiting someone to challenge the legality in court? Or am I missing something?