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Cookie, I don't know of a 22 inch barrel for this model. I would check with Smith and Wesson Customer Service at 1-800-331-0852 Mon-Fri 8:00AM-5:00PM Eastern Time. 22LR pretty much achieves a complete powder burn around 16 or 17 inches. You can actually lose velocity after 18 inches in most cases due to friction created by the extra barrel length after the powder is completely burned. Barrel length does not determine a bullets accuracy : --- 1-800-331-0852 Mon-Fri 8:00AM-5:00PM Eastern Time ------------ http://www.ballisticsbytheinch.com/22.html