Ruger Mark IV, Target, Single Action, Semi-automatic, Metal Frame Pistol, Full Size, 22LR, 5.5" Barrel, Bull Barrel, Alloy, Blued Finish, Checkered Grips, Adjustable Rear Sight, 10 Rounds 40101 • Single Action • Capacity: 10+1 • Finish: Blue • Sights: Front: Fixed Rear: Adjustable • Barrel length: 5.5 Bull Barrel • Overall length: 9.75 • Magazine DisconnectSimple One-Button Takedown One-Piece Machined Grip Frame Ergonomic Bolt Stop • Single Action • Capacity: 10+1 • Finish: Blue • Sights: Fixed Front/Adjustable Rear • Barrel length: 5.5" • Overall length: 9.75" • 15in Free-Float MLOK Rail/ Ambi Bolt Release