Aero Precision M5 ATLAS Taper Lock Kit .308 in Black. 308) ATLAS Handguard. All of Aero Precision ATLAS Handguards come with this already in the packaging. Specifications for Aero Precision M5 ATLAS Taper Lock Kit: Manufacturer: Aero Precision Color: Black Finish: Anodized Gun Model: M5 Condition: New Country of Origin: USA Package Contents: Aero Precision M5 ATLAS Taper Lock Kit ATLAS Clamp Screw ATLAS Taper Lock Right Side ATLAS Taper Lock Left Side What firearm models does the manufacturer say Aero Precision M5 ATLAS Taper Lock Kit is compatible with? The manufacturer says that Aero Precision M5 ATLAS Taper Lock Kit is compatible with M5Aero Precision APRH101267: M5 ATLAS Taper Lock Kit .308 in Black