Revolver accuracy is dependent on several points starting with the diameter of the cylinder throats which should be .001″ TO .002″ larger than the bullet diameter. For instance a 38 special or .357 magnum cylinder throat should be .358″ .359″, but no larger. RG M 40 IN 38 SPECIAL GUN PARTS LOT ALL PICTURED 4 ON PRICE ITEM #19-244. RG 33 IN 38 SPECIAL BLUED STEEL PARTS LOT ALL PARTS PICTURED 4 ON PRICE . THE SMALL PARTS ARE IN GOOD WORKING CONDITION. No local pick up, No exceptions. All firearms parts should be inspected and installed by a competent gunsmith. Popular among security personnel. Forged alloy steel frame, cylinder and barrel.Three different barrel lenght. Black, matte and shiny stainless steel options. Hammer safety. Ergonomic grip. Available in .357 Magnum and .38 Special. Smith & Wesson 638 Revolver, 38 Special, 2" Barrel, Stainless, Shrouded Hammer, New, S&W. Smith & Wesson model 638 Bodyguard revolver chambered in 38 Special. The Smith & Wesson J-Frame has become the most popular small frame... Dec 27, 2017 · A descendant of the .38 Hand Ejector Military & Police Model of 1899, Smith & Wesson’s first swing-out-cylinder revolver to chamber the then-new .38 Special cartridge, the Victory model, was an updated wartime production version introduced in 1942.