SME Neoprene Stock Riser With Shell Loops - This stock riser improves shooting comfort by reducing recoil force and allows you to carry extra ammo along the way. Includes 5 foam inserts of various thickness for desired comfort: 1/8in, 1/4in, 3/8in, 1/2in, 5/8in Improves gun fit by gaining proper eye alignment for shooting accuracy 100% neoprene with rubber back Built-in swivel stud access for sling attachment