DoubleStar ARFX-E Skeleton Stock Entry Length w/Buffer Tube Black Foam and .5in RP. Anodized Aluminum stock that is light than a standard stock while retaining high strength and durability. Entry Length Specifications for DoubleStar ARFX-E Skeleton Stock Entry Length w/Buffer Tube: Manufacturer: DoubleStar Color: Black Gun Model: M16 AR-15 Length: 9.75 in Condition: New Gun Make: AR Platform Gun Type: Rifle Weight: 18 oz Finish: Anodized Fabric/Material: 7075-T6 Aluminum Features of Doublestar ARFX-E Stock with Buffer Tube with Black Foam and .5in RP Length: 77.5 (Entry length) Assembly: No Recoil Pad: .5 Package Contents: DoubleStar ARFX-E Skeleton Stock Entry Length w/Buffer Tube What firearm models does the manufacturer say DoubleStar ARFX-E Skeleton Stock Entry Length w/Buffer Tube is compatible with? The manufacturer says that DoubleStar ARFX-E Skeleton Stock Entry Length w/Buffer Tube is compatible with AR-15 M16DoubleStar A110B: ARFX-E Skeleton Stock Entry Length w/Buffer Tube Black Foam and .5in RP