JE Machine Tech .223 A2 Buffer Tube Combo 3 Pieces Black PS-BTA Combo5. Each cut is made meticulously to ensure our A1 buffer tube meets Mil-Spec requirements. With its durable construction and adherence to Mil-Spec the JE Machine A1 buffer tube is the perfect choice for any restoration or retro build ARs. Specifications for JE Machine Tech .223 A2 Buffer Tube Combo 3 Pieces: Manufacturer: JE Machine Tech Color: Black Finish: Anodized Fabric/Material: 6061 Aluminum Plastic Polymer Gun Make: AR Platform Gun Model: AR-15 Length: 10 in Diameter: 1 in Features of JE Machine Tech .223 A2 Buffer Tube Kit 3 Pieces A1 length buffer tube For AR15/10 rifles Package Contents: JE Machine Tech .223 A2 Buffer Tube Kit 3 Pieces A2 Buffer Tube Spacer and A2 Rifle Length Vented Buffer Tube Screw are included What firearm models does the manufacturer say JE Machine Tech .223 A2 Buffer Tube Combo 3 Pieces is compatible with? The manufacturer says that JE Machine Tech .223 A2 Buffer Tube Combo 3 Pieces is compatible with AR-15JE Machine Tech PS-BTA Combo5: .223 A2 Buffer Tube Combo 3 Pieces Black