It's weight unloaded is 40 oz. As per Taurus website, buds DC doesn't always list every detail because they have a lot of rotating stock and sometimes details get missed.
The loaded weight on that pistol with a full cylinder would be 41.1 ounces.
taurususa.com/firearms/revolvers/tracker-992/tracker-992-revolvers-22-lr-22-wmr-9-round-matte-black-oxide/

38 OZ see ***** he most versatile Tracker ever, no other revolver in its class comes close to matching the versatility of the Tracker 992. It easily transforms from .22 LR to .22 Magnum in seconds with its breakthrough removable cylinder. It's everything you could ever want for plinking, target practice or varmint hunting with these popular and affordable ammunition choices. This model has a blued metal finish and 4" barrel.
Oal
8.75"
Type
Revolver
Grips
Black Ribber
Action
Single/Double
Series
Tracker
Sights
Fixed Front, Adjustable Rear
*******Weight
38 oz
Caliber
22 long rifle22 winchester magnum rimfire wmr
Capacity
9
Includes
22 WMR Cylinder
Frame Size
Compact
Hammer Style
Exposed
Barrel Finish
Black Matte
Barrel Length
4"
Cylinder Finish
Black Matte

John, 40 oz is the listed weight for Taurus model 2-992041 on the Taurus website.

John, Here are specs directly from the Taurus website---------------
ITEM # 2-992041
FRAME SIZE Medium
CAPACITY 9 rds.
HEIGHT 5.30"
WIDTH 1.50"
WEIGHT 40.00 oz.
BARREL LENGTH 4.00"
OVERALL LENGTH 8.80"
FRONT SIGHT Fixed
REAR SIGHT Adjustable
SAFETY Transfer Bar
MSRP $639.45

John, Taurus specifications are Weight : 38 oz. Cheers and stay safe!