Wondering if anyone can answer a quick question for me. Looking to do a deal and the seller is offering to throw in a "pre-ban" ruger 10/22 receiver. I am no pre-ban/post-ban expert but I thought that had to do with the mags not the receiver. Am I missing something? Is there such thing as a "pre-ban" receiver? Even if there was I am pretty sure you can't put brand new/post ban 30 round mags in it correct?