The SilencerCo Sparrow 22: The Sparrow 22 was the suppressor that started it all - the first suppressor SilencerCo ever created. This iconic suppressor sets the bar for sound performance, size, weight, easy cleaning and caliber versatility all in one durable, simple design. The Sparrow 22 was one of the first suppressors to be user-serviceable, making it easy to clean and increasing longevity. Fifteen years later, this suppressor is still a best seller due to its brilliant design. The Sparrow 22 is rated for .22 LR, .22 Mag, .17 HMR, .17 WSM and FN 5.7 A- 28 calibers. It's full-auto rated with 22LR. It's compatible with Delta Adapters.