I have a HK93 semi rifle. I found that HKparts.net has select fire trigger packs for $408 and up. Can I legally set up my HK to select fire?
If this is the case, would it be lawful to use the trigger pac with the registered sear in different host non-sbr HK rifles, ie HK91 or 94? Being that the sear is the only true NFA device? Or am I off base with this?