Smith & Wesson Model 66-3 .357 Magnum K-Frame, 4-inch Heavy Barrel, Stainless DA/SA Revolver
This Smith & Wesson Model 66-3 is a stainless K-Frame .357 Magnum with a 4-inch heavy barrel and six-shot fluted cylinder. The -3 revision incorporates notable internal updates, and this example features adjustable sights and classic S&W controls. The BHF serial prefix indicates an approximate 1991 production timeframe, adding clear context for collectors and enthusiasts.
The revolver is built entirely of stainless steel with a partial underlug and a serrated top strap/rib. It carries a pinned ramp front sight with red/orange insert and an adjustable micrometer rear sight for precise elevation and windage. The DA/SA action pairs a smooth-faced trigger with an exposed, checkered hammer spur for confident operation.
As a dash-three, it includes factory engineering changes such as the yoke-retention system, radius-stud, hammer-nose bushing, and a floating hand. The yoke cut is stamped "MOD. 66-3," and the Model 66 line is recognized as the stainless counterpart to the blued Model 19 "Combat Magnum."
Factory markings read "MADE IN U.S.A. MARCAS REGISTRADAS SMITH & WESSON SPRINGFIELD, MASS." Construction, features, and markings align with U.S. production. Overall, this is a well-configured .357 Magnum K-Frame with period-correct features and desirable dash-3 updates.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are visible signs of wear and handling. Scratches and small blemishes are present across the stainless surfaces, consistent with normal use.
What’s Included
- Hard case
The 4-inch heavy barrel with partial underlug provides the classic balance associated with K-Frame service revolvers, while the fluted six-shot cylinder keeps handling familiar and straightforward. The stainless construction across the frame, barrel, and cylinder offers durability and a uniform finish.
Sight regulation is handled by an adjustable micrometer rear sight paired with a pinned ramp front sight featuring a red/orange insert. The top strap/rib is serrated to reduce glare and aid sight focus.
Controls include a smooth-faced trigger and an exposed, checkered hammer spur, supporting both double-action and single-action operation. The revolver wears black rubber finger-groove grips for a secure, comfortable hold.
The dash-three engineering updates—yoke-retention system, radius-stud, hammer-nose bushing, and floating hand—reflect factory improvements of the era. The BHF serial prefix points to an approximate 1991 production window, with the yoke cut correctly stamped "MOD. 66-3."