Introducing the Tactical Solutions PLIV45TEMBNF, a versatile PAC-LITE pistol barrel specifically designed for the Ruger Mark IV or Mark IV 22/45 pistol. Engineered with a focus on lightweight, this .22 LR barrel, and receiver set stands as a testament to TacSol\'s reputation in the .22LR aftermarket barrel industry. It exemplifies lightweight construction, exceptional accuracy, and straightforward installation.The benefits are plenty - expect a significant upgrade in terms of accuracy, performance, and reliability. The barrel has an outside diameter of 1\