AR-16- M4 Cheek Riser

The original Colt - Armalite M-4 version of the AR-15 with collapsible stocks had the high carry handle recievers. Scopes were used by mounting to the carry handle which required the head be held high off the stock to sight through the scope. This model was used for a short time until the flat top actions came into use. These were made to fit the original M-4 Colt collapsible stocks. They also fit some of the after market made M-4 stocks but not all as those stocks were made by several sources and had varying dimensions So this may not fit your stock but possibly can be made to fit with some cutting and shaping. This cheek riser is held in place with on screw that holds the bottom of the base together and then the top pad is slid in place holding the two haves of the base together.