Smith & Wesson J Frame Model 640 Bare Hammer .357 Magnum Used Part J frame The cylinder stop (also called Color:Lighter Brown third generation adjustment J612

The cylinder stop (also called the cylinder bolt) is a critical timing component that locks the cylinder in proper alignment with the barrel for each shot

This barrel fits Smith & Wesson J Frame Model 37 Airweight revolvers chambered in

locking everything in alignment

Features a

This is a used OEM part

Smith & Wesson J Frame Model 640 Bare Hammer .357 Magnum Used Part J frame The cylinder stop (also called Color:Lighter Brown third generation adjustment J612 The cylinder stop (also called the cylinder bolt) is a critical timing component that locks the cylinder in proper alignment with the barrel for each shot This barrel fits Smith & Wesson J Frame Model 37 Airweight revolvers chambered in