I wouldn't take the ratings ('as is' to 'mint') epps places on used guns to heart.
These are the opinions of the epps employees that assess the guns after a very cursory inspection.
This is not an in depth gunsmith conducted assessment.
It's still up to the buyer to check, inspect and test the product.
You've got 30 days to do it where you can get a refund for a defective gun.
Plenty of time for a comprehensive inspection and range test.