This is a cross between the AR-10 and the SCAR17.
Your choice of barrel and gas system, barrel with pinned brake makes a compact and accurate rifle.
Accepts all standard .308 mags. Conversions available in .243 Winchester, and .260 Remington
Better than a SCAR and less money.
See it on their website: https://robinsonarmament.com/xcr-m-standard/