The Strike Industries SI-AR-GTP AR-15/M16 Gas Tube Pistol Length 6 3/4" delivers unmatched performance for your firearm system. This precision-engineered gas tube enhances reliability in your 223/5.56 Rifle or M16 platform, ensuring optimal gas flow and durability. Mil spec stainless steel 304 for superior strength Oversized roll pin included for secure installation Designed specifically for 223/5.56 Rifle and M16 pistols Corrosion-resistant finish protects against rust MADE IN USA for guaranteed quality Enhance the functionality of your firearm with the Strike Industries gas tube and enjoy consistent operation every time.