Both the SBR and Full length G&P SAI GRY M4 Rifles are now in stock at Airsoft Station as they feature these in their video... "This high end AEG features fully licensed trademarks from Sailent Arms and is made by G&P. It comes in two versions, the full length and the SBR. Both feature the jailbreak muzzle device and a keymod rail system that runs the length of the entire barrel."