Aimpoint Strap for Cap Adjustment Screw for CompM4. These red dot sight accessories boast the same Aimpoint quality as we have come to expect from Aimpoint Red Dot Sights. These Aimpoint Red Dot Sight Accessories are made to work with the Aimpoint Red Dot Scopes. Package Contents: Aimpoint CompM4 Strap for Cap Adjustment Screw and Battery Cap 11567: Aim point Strap for cap adjustment screw for CompM4