Magpul Industries Cheek Riser Accessory Fits CTR/MOE .75in. Cheek Riser For Use on Non AR/M4 Applications Grey. The cheek weld can be raised as high as you prefer it to go in order to comfortably see through optics. The risers are NOT intended for use with AR15 and M4 rifles due to its interference with the charging handle. Main designation of the MAGPUL Stock Clip-on Cheek Weld Riser is for the M14 carbine applications. Specifications for Magpul CTR/MOE Stock Cheek Riser: Gun Model: AR15 Package Contents: Magpul CTR/MOE Stock Cheek Riser What firearm models does the manufacturer say Magpul CTR/MOE Stock Cheek Riser is compatible with? The manufacturer suggests that Magpul CTR/MOE Stock Cheek Riser is compatible with AR-15Magpul Industries MAG327GRY: Cheek Riser Accessory Fits CTR/MOE .75in. Cheek Riser For Use on Non AR/M4 Applications Grey