Smith & Wesson 6906, Firing Pin Spring, Used, Excellent $10.00 Excellent condition, used firing pin spring, for a Smith and Wesson 6906. In stock Smith & Wesson 6906, Firing Pin Spring, Used, Excellent quantity Add to cart Category: Smith & Wesson Related products Smith & Wesson K frame center pin spring $5.00 Smith & Wesson K frame .38/.357 Extractor Rod, long $20.00