You are in violation of rule #7 and your ad might be lock.
7. No auctions (or links to auction sites), unless specifically authorized by AR15.com. Accepting higher than stated prices for an item is considered 'taking bids' and is not allowed. If receiving a higher than advertised price is important to you, list your item on an auction site. Moreover, "Or Best Offer" is understood on the EE to mean best offer up to the listing price, not best offer above the listing price.
"May God have mercy upon my enemies, they will need it."