Trijicon ACOG Scopecoat Fitted For 4 X 32 ACOG Scope Models Fitted for 4x32 ACOG scope models Not for NSN models The Scopecoat is constructed of the highest quality neoprene laminated with nylon Safeguards the scope or sighting system from dings and scratches, dust, dirt, and moisture Neoprene has a 5% moisture absorbency which takes moisture (condensation and sweating) away from the scope or sight and helps protect it from rust & corrosion Not for NSN models