I've ordered 5 times with them, each time USPS, even when I ordered 600$ worth of gear. Two friends also ordered, again USPS no problem. The "I was lucky" was for the passing customs. I'm aware it's not 100% chance but I believe they are a recognized retailer, and maybe their documentation is considered, better then a place that doesn't send docs. I took the chance for a huge discount and it all worked out. Before ordering I also consulted with 3 other people I know that had their rifles come in without a problem from evike.
Priority Mail is USPS, that's the correct one.
BA Certified Level 2