People get way too freaked out with their applications.
fill out, sign, put in envelope, address to where it said to, put stamp on envelope, put in mail box.
Has worked for my original, and 3 renewals without a hitch!
No certified mail, no special delivery, no signed receipt requested. Just good ole bankrupt U.S. Mail!
Cheapshooter's rules of gun ownership #1: NEVER SELL OR TRADE ANYTHING!