FAB Defense Adjustable Cheek Riser with Picatinny Rail for GLR16 Stock OD. These AR15 Stocks give you an adjustable cheek riser that helps you get a comfortable sight picture when looking through an optic so that you can maintain accuracy. It also has a Picatinny rail on the side providing an extra place to mount your favorite accessories. Pick up the FAB Defense Adjustable Cheek Riser w/ Picatinny Rail for GLR16 Stock if you want to make a reliable upgrade to your firearm Specifications for FAB Defense Adjustable Cheek Riser w/ Picatinny Rail for GLR16 Stock: Manufacturer: FAB Defense Additional Features: for GLR16 Stock Features of FAB Defense Adjustable Cheek Riser w/ Picatinny Rail for GLR16 Stock: Fully Adjustable Cheek Rest Dual Picatinny Rails Ideal Mounting Solution for the SH-5 Easy to Attach and Dismantle Lightweight and Strong Easy to Install No Gunsmith Required Package Contents: FAB Defense Adjustable Cheek Riser w/ Picatinny Rail for GLR16 Stock FAB Defense FX-GPCPG: Adjustable Cheek Riser with Picatinny Rail for GLR16 Stock OD