Smith & Wesson K Frame Model 66-2 Bolt, Spring & Plunger - Part# 6645B

Smith & Wesson K Frame Model 66-2 Bolt, Spring & Plunger

OEM Smith & Wesson replacement bolt, spring, and plunger assembly for the K Frame Model 66-2 revolver. This is an old-style used part in good working condition — a reliable, cost-effective option for gunsmiths and collectors restoring or repairing a Model 66-2.

Part Details

• Part Number: 6645B
• Condition: Used, Old Style
• Fits: Smith & Wesson K Frame Model 66-2
• Caliber: .357 Magnum / .38 Special
• Frame Size: K Frame

Compatible Models

This bolt, spring, and plunger assembly is specific to the Model 66-2 variant. The bolt may also be compatible with other K Frame .357 Magnum models (Model 19, 65, 66) — verify fitment before installation. Internal K Frame parts such as the bolt, rebound slide, and trigger generally interchange across K Frame centerfire models.

Condition Notes

This is a used, old-style part. Inspect upon receipt and test function before installation. Sold as-is for gunsmith use.