H World Shopping Airsoft ACH Fast Helmet Ear Cover Side Protection Rail Kit SWAT We ship from Hong Kong or China, 100% Brand New Works with the ACH-ARC Kit and the FAST Helmet rails.Provides additional coverage and environmental protection. For airsoft use only. (No ballistic protection),Fit OPS-Core helmet rail. Weight : 97g ,(NOTE: Helmet or helmet rail is not included in this item. ) Low profile design does not interfere with sighting (stock weld) on shoulder fire weapon system.