I have a couple NEW M16 (semi - full) lower receiver parts kits that include everything, except stock, to complete your registered lower receiver including auto sear with pin. All are brand new and all are MILSPEC. $125 / ea delivered
Also have a few NEW M16 complete bolt carriers that are also MILSPEC - $140 / ea delivered
I can send pics. Please email instead of IM. I will not ship to states that do not allow these parts. ALL NFA RULES APPLY.