SK is excited to announce the latest addition to its family of .22 LR ammunition: SK Semi-Auto Rifle. New for 2020, SK s Semi-Auto Rifle is designed to outperform, replace and eventually retire all other inferior semi-auto ammunition offerings currently crowding the market. It s built to deliver pinpoint accuracy while functioning flawlessly through any 10/22 style firearms, AR s, 597 s, 64 s, and more. Today s new and innovative semi-auto rimfire rifles and their competitive shooting disciplines are at an all-time high in popularity. Unfortunately, quality .22 LR semi-auto ammunition has not evolved at the same pace until now. SK Semi-Auto Rifle features an optimized velocity (345 m/s or 1132 fps) and clean burning propellants that produce effortless semi-auto action functioning. Feed issues commonly seen with inferior semi-auto rimfire products are eliminated. Competitors seeking to gain an edge with their factory and semi-custom firearm builds will trust SK Semi-Auto Rifle to deliver results time and again, with repeatable accuracy. SK s Semi-Auto Rifle is a true match-grade product with an unbeatable price-quality ratio. Get loaded with SK Semi-Auto Rifle. Engage Targets. Repeat. Product Specifications Caliber: 22LR Bullet Weight: 40 Grain Bullet Type: - Muzzle Velocity: 1,132 fps Muzzle Energy: 1,126 ft-lbs Quantity: 50 Rounds per Box