The tactical solutions pac-lite pistol barrel is a lightweight and accurate.22 lr barrel and receiver for the ruger mark iv or mark iv 22/45 pistol.The pac-lite upgrade represents what tacsol is known for in the.22lr aftermarket barrel industry; lightweight, highly accurate, and easy-to-install barrels.This barrel dramatically increases accuracy, performance, and reliability.The 1" outside diameter of the threaded barrel is designed to shoot and look great with or without attachment of a suppressor or compensator.Suppressors are easily attached by simply twisting them on the barrels threaded end.Hand-chambered for 22 lr, with a target crown and chromoly bore, the pac-lite replacement barrel upgrade is everything you could ask for in a pistol barrel.Length: 4.50"Model: Pac-LiteTwist: 1:16"Sights: Blade Ramp Front, Adjustable RearBore Type: Chrome MolyFinish: AnodizedBarrel Type: Suppressor ReadyBarrel Features: Threaded