Armaspec S2 Enhanced Trigger Guard Flat Dark Earth. The Armaspec S2 also removes the gap between the grip and trigger guard and creates a uniform look. The Armaspec S2 is a drop in replacement and is made from billet aluminum. Specifications for Armaspec S2 Enhanced Trigger Guard: Manufacturer: Armaspec Gun Make: AR Platform Gun Model: AR-15 Fabric/Material: Billet Aluminum Condition: New Country of Origin: USA Features of Armaspec S2 Enhanced Trigger Guard Fits AR 5.56/.223 and 7.62/.308. Package Contents: Armaspec S2 Enhanced Trigger Guard What firearm models does the manufacturer say Armaspec S2 Enhanced Trigger Guard is compatible with? The manufacturer says that Armaspec S2 Enhanced Trigger Guard is compatible with AR-15Armaspec ARM131-FDE: S2 Enhanced Trigger Guard Flat Dark Earth