CCI Quiet-22 is ultra-quiet plinking ammunition in .22 Long Rifle. It offers a 75% reduction in perceived noise from standard velocity .22 LR, roughly 65db at the shooters ear. This new ammunition offers air rifle sound levels with rimfire performance. Excellent accuracy and low velocity (710 fps), great for backyard plinking and introducing youth to the shooting sports. These cartridges may be used in semi-automatic firearms, however manual cycling of the action may be required. Mfg: Cci