The Remington Semi-Auto Sniper System (RSASS) is a prototype 7.62x51mm rifle. It features a full length rail, uses Magpul 7.62mm magazines and has a left-side foldable charging handle. Nice! I stole these photos from the AAC Blog …
I am a little surprised to see that they are not using the Magpul Massoud as the basis for their upcoming 7.62mm rifle.