This anti-reflective device is made of aluminum and threads into the objective end of the VCOG sight for a secure fit. The killFlash and Objective Flip Cap is specifically designed to fit together and rotate easily to a preferred position. The caps flip open and "lock" into position, out of the way. Product includes: Objective Flip Cap Anti Reflection Device Ocular Flip Cap Ocular Flip Cap Adapter Mfg: Trijicon
