Smith & Wesson J Frame Model 37 Airweight Hammer Block Old Style .38 Special Used SW99 Series This screw secures the internal

This screw secures the internal gun lock mechanism that is standard on modern S&W revolvers

Part #: 394000000

31 K-Frame

22 Magnum Kit Gun)

The stainless steel construction provides long-lasting durability and maintains its appearance even with regular use

Smith & Wesson J Frame Model 37 Airweight Hammer Block Old Style .38 Special Used SW99 Series This screw secures the internalSmith & Wesson J Frame Model 37 Airweight Hammer Block Old Style . 38 Special Used (Part# J3710A) This listing is for one used Smith & Wesson J Frame Model 37 Airweight hammer block in the old style configuration. This is an OEM factory part in used condition, removed from a functioning firearm. The hammer block is a passive safety component that prevents the firing pin from contacting the primer unless the trigger is fully depressed. Note: This is