Product DescriptionThe Geissele Automatics Buffer Tube Assembly with Super 42 Spring and H2 buffer is a premium upgrade for AR-15 pattern carbines built around mil-spec compatibility, durability, and reliable cycling. The carbine-length buffer tube is machined from strong 7075-T6 aluminum and finished with a Type 3 hardcoat anodize for long-lasting performance in demanding conditions. Designed with 6 stock positions and a mil-spec diameter, it works with most mil-spec AR-15 stocks and includes a mil-spec castle nut and end plate for a more complete installation package.The included Geissele Super 42 spring uses a distinctive three-strand wire design that acts as a harmonic damper and energy absorber. This design helps reduce spring fatigue and failure, eliminates the common spring twang felt through the buttstock, and delivers approximately 15% more average return force than a standard buffer spring. Paired with the H2 buffer, this assembly is engineered to help maintain dependable function when conditions are less than ideal.Product Highlights Complete AR-15 buffer tube assembly with Geissele Super 42 spring and H2 buffer for enhanced reliability Machined from durable 7075-T6 aluminum with Type 3 hardcoat anodized finish for strength and corrosion resistance Mil-spec diameter, carbine-length tube with 6 stock positions for broad compatibility with most mil-spec AR-15 stocks Three-strand Super 42 spring design helps reduce spring fatigue, improve cycling, and eliminate spring twang Includes mil-spec castle nut and end plate for a convenient, ready-to-install package Specs Product Type: Buffer Tube Assembly Platform Compatibility: AR-15 pattern carbines Buffer Weight: H2 Color: Black Tube Material: 7075-T6 Aluminum Finish: Type 3 Hardcoat Anodize Tube Length: Carbine Length Tube Diameter: Mil-Spec Stock Positions: 6 Tube Weight: 3.7 oz Includes: Buffer tube, Geissele Super 42 spring, H2 buffer, mil-spec castle nut, mil-spec end plate Country of Manufacture: USA UPC: 817953026984 MPN: 08-163B-H2 Brand: Geissele Automatics Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.