The Strike Industries SI-AR-GTC AR-15/M16 Gas Tube Carbine Length 9 3/4" ensures optimal performance for your firearm. Engineered from heat-treated stainless steel, this gas tube delivers unmatched durability while maintaining seamless operation for your 223/5.56 Rifle and M16 platforms. Mil spec stainless steel 304 for superior strength Oversized roll pin included for easy installation MADE IN USA assurance of quality Upgrade your firearm's reliability with the Strike Industries gas tube and enjoy consistent performance every time you pull the trigger.