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By the early 1980s, the company automated its inventory tracking, adopting a three-letter prefix followed by four digits (e.g., AAA0000). How to Locate the True Serial Number

The absolute authority for an S&W serial number is located on the .

Slide the new sight leaf into the slot from the rear. Ensure the front screw hole aligns perfectly. Use a drop of low-strength thread locker (such as blue Loctite) on the mounting screw to prevent it from backing out under heavy recoil. Mainspring Tuning

Model 19-6 New yoke retention system How to Verify Your Serial Number

: This is the most authoritative location. You may need to remove aftermarket or wrap-around grips to see the full number.

used during manufacturing and do not indicate the firearm's actual identity. The "-5" Stamp

On many older models, the rear face of the cylinder is precision-stamped with a matching serial number to ensure parts matching.

When entering the serial number into your records, . For a Model 195, a serial number recorded as "78500" is incorrect; it must be recorded as "S 78500". The space between the letter and the digits is standard for S&W formatting. Step 2: Cross-Reference Part Numbers

: You may need to remove the grips if they wrap around the bottom of the frame to view the stamping. Confusion with Assembly Numbers