Hi Scott, the unloaded weight is 16.3 ounces.
Stay safe & have a great day!

16 OZ see ****
Smith and Wesson Model 642 Specifications
Manufacturer: Smith and Wesson
Family: 642 Series
Model: 642
Type: Revolver
Action: Double Action Only
Caliber/Gauge: .38 Special
Finish: Matte Stainless
Frame: Aluminum Frame
Grip Type: Synthetic, VZ Blk & Gray G10 UC High Horn
Barrel Length: 1 7/8"
Overall Length: 6.3"
Capacity: 5
Sights: XS Front Night Sight / Black U-Notch Rear
********Weight: 16 oz.
Additional Info: Titanium Pins/Enhanced Trigger, Chamfered Charge Holes, Beveled Cylinder Edges

Hi Scott and welcome. Unloaded weight is 16.3 oz's and fully loaded with 5rds of 125gr .38 Special self-defense ammunition approximately 18.4 oz's. Cheers, stay safe and enjoy!

Smith & Wesson 642UC, Ultimate Carry, . 38 Spl +P, 5rd Capacity, 1 7/8" Barrel, Stainless, Front Night Sight, VZ Black & Gray G10 UC High Horn Grips, 13995.
WEIGHT: 16 oz.