Real strict ownership and in possession laws here only allowed three autos max under special conditions for competition range use only. Without turning in that receiver for destruction being a potential number 4 would have had SWAT team on doorstep. Don’t Ever let the Government control your guns as what they say and do ends up different over time. Trade off was loophole in laws only recognises the receiver as the gun so by handing that bit in to tick boxes of officialdom got to keep everything else. Hell of a way to work having to buy whole gun and trash for a firing pin that was broken. My trigger plate is the front sliding safety pre cross bolt. I actually have a cross bolt trigger plate as spares.