Smith And Wesson Model 195 Serial Numbers Install

For a successful "Model 195" parts install, you need to ensure the used parts come from a compatible era. Check these four locations:

| Location | What it tells you | Tool needed | | :--- | :--- | :--- | | Butt (grip frame) | Primary serial (legal S/N) | Screwdriver (remove grips) | | Yoke (crane) | Last 3-4 digits of S/N | Bright light | | Cylinder face | Last 3-4 digits | Magnifying glass | | Extractor star | Last 3-4 digits (under star) | Extractor rod tool |

If the numbers don't match: You are dealing with a "parts gun." You will need to hand-fit the new components—simply dropping them in will cause the cylinder to bind or the barrel gap to be excessive.

Even with matching serial numbers, old revolvers have wear. Here are the three most common issues after installation:

| Symptom | Cause | Fix based on serial era | | :--- | :--- | :--- | | Cylinder binds after 6 shots | Extractor rod unscrewed (reverse threads on S&W). | Tighten rod. Pre-1955 guns have left-hand threads. | | Hammer won't cock on one chamber | Ratchet tooth worn. Serial mismatch between cylinder and hand. | Replace hand with N-frame long-action part. | | Bullets shave lead at barrel gap | Barrel over-indexed (too tight). Gap less than 0.003”. | Re-cut forcing cone or re-set barrel shoulder. | smith and wesson model 195 serial numbers install

Use this post-installation checklist. Each step must pass.

The Model 19 is a robust firearm, but it has a known characteristic regarding the forcing cone. Extensive use of light-bullet .357 Magnum loads (110 grain) can cause cracking at the forcing cone (the entrance to the barrel). Most experts recommend using .38 Special ammunition for practice and 158 grain .357 Magnum loads for duty/carry to prolong the life of the revolver.

Disclaimer: This information is provided for educational purposes. If you have a firearm with a mechanical issue, it is highly recommended that you consult a qualified gunsmith.

In the late 1980s, the "Model 195" didn’t exist as a single unit, but the Smith & Wesson Model 19-5 For a successful "Model 195" parts install, you

—the fifth major engineering variation of the legendary .357 Combat Magnum—was a centerpiece of American law enforcement.

Arthur, a retired detective, sat at his workbench, the blued steel of a 19-5 reflecting the dim garage light. He was looking for its history, a task that required finding its unique identity. The Search for the Identity Arthur knew that on these mid-80s K-frames, the official serial number was always stamped on the bottom of the butt of the frame

. He flipped the revolver over, seeing a string of three letters followed by four numbers—the "triple-alpha" format S&W adopted in 1980. Curious, he swung out the cylinder. Stamped behind the

(the crane), he saw the designation "MOD 19-5". Near it were other numbers, but Arthur knew those were just assembly numbers Even with matching serial numbers, old revolvers have wear

used by factory workers to keep parts together during the "soft fitting" process. A Relic of Change

His particular 19-5 was a transition piece. Unlike the older "pinned and recessed" versions his father carried, this model had a non-pinned barrel non-recessed cylinder

, changes made starting in 1982 to streamline production. Yet, it retained the classic hammer-mounted firing pin

, a feature that would eventually vanish in later "dash" models.

Note: Before proceeding, it’s important to clarify a technical nuance. Smith & Wesson did not manufacture a factory-designated "Model 195." The most famous S&W .45 ACP revolver is the Model 1917. However, collectors and gunsmiths often refer to the 1950 Target Model (pre-Model 26) or the 1950 .45 Army Model (pre-Model 22). The number "195" in user searches frequently refers to a custom build or a misunderstood model year (e.g., 1950). For the purpose of this guide, we are addressing the installation of a barrel or cylinder on a Post-War N-Frame .45 ACP revolver (circa 1950–1955) that is commonly mislabeled as the "Model 195."