Yea im gonna call bull**** on that. Sending money friends and family regardless of why is just sending money. Bypassing the goods and services option just means you as a buyer are not receiving buyer protection and if the seller wants to be a dick and take the money and run then you have no legal protection. USPS is a government owned parcel service. You think the government wants you using their money order to buy ANYTHING firearm related?
You are right, and I was wrong about Paypal.
(They still suck though.)