Introduced in 1978, the Smith & Wesson Model 629 is a stainless steel version of the Model 29. The 629 model designation derives from Smith & Wesson's practice of denoting a stainless steel version of one of their already existing designs by placing a 6 in front of the model number of the original weapon. The 629 Classic variant features a full-length barrel underlug, other variants include the 629 Stealth Hunter.
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