Upgrade the look of your Airsoft Gun with this CRT Style AEG Stock, Black. Fits M4 AEG buffer tubes. The position of the CRT style stock is easy to adjust and lock into place. All you have to do is press the lever in the center of the stock to adjust the length, then push down the position lock lever at the base of the stock to lock it in place. Two sling loops are built into the stock. A QD sling mount is also built in. The butt plate is a rubberized plate to help keep your rifle in place when flush to your shoulder.