If there is a genuine sniper at IO, it is coincidental. Most of them are standard infantry rifles converted to sniper configs. The stocks are newly cut, the bolt handles welded on, and the scopes and mounts are newly made. The easiest way to tell a fake scope is to look both at the screw heads (real are round-topped, fakes are flat topped) and the serial number. If the serial number has a 4 looking character before the numbers, it is a fake. If there is no scope serial number along the left side barrel shank (or if there is no sign of that number being buffed off), it is a fake.
Most of these rifles coming in are too old to be correct PU snipers. A real PU has a round, high-wall reciever made 1942-1944. There are correct PU's made later, but very rare, including the exceedingly rare 1941 snipers. If it is earlier than 1942, it is a fake. If it is hex-reciever, it is a fake. And ALL of the PE snipers they have, ALL OF THEM, are fakes.
As a general rule of thumb, all of the snipers at any of the distributors are fake, EXCEPT for the Samco scopeless snipers, which came out of Yugoslavia and are real deal PU snipers lacking their scopes and mounts (but correct stocks, numbers, and bolt handles) and the restored snipers at Military Gun Supply. Those are real deal PU snipers that were converted back to infantry rifles by the Soviets. MGS is restoring them to original configeration and are including REAL WWII Soviet PU scopes and mounts (but not an original base). They are real snipers with real parts but are what they call "restored". If it comes from Aim, SOG, IO, or Century, or if it happens to be less than $600, it is almost certainly a fake (you would win the lottery before you get a real PU from SOG.)
Ash