After doing some test fires of this AEG previously, Angus of Deathcore Airsoft now gives us a full review of the AEG... "Today we have the video review of the all new ICS SIG 551 MRS RIS Airsoft AEG; out of the box this is a superb airsoft replica that will please anyone looking for a high end SIG. The gun features a built in rail interface system for customization options and a folding stock for tight situations, along with other features. Overall a great gun!"