Hi James and welcome. Yes, the GP100 model has a stainless steel 2.5"-barrel, frame, and cylinder with a Black finish.

straight from ruger its Blued over alloy steel GripsCushioned Rubber with Hardwood Insert
Front SightGold Bead Novak
Barrel Length3"
MaterialAlloy Steel

Capacity6
Rear SightLoMount Novak
Twist1:18.75" RH
FinishBlued

Overall Length8.50"
Weight36 oz.
Grooves5
Available in CANo
Available in MANo
UPC7-36676-01753-9
Triple-locking cylinder is locked into the frame at the front, rear and bottom for more positive alignment and dependable operation shot after shot.
Grip frame design easily accommodates a wide variety of custom grips.
Disassembly of integrated subassemblies requires no special tools and allows for easy maintenance and assembly.
Transfer bar mechanism provides an unparalleled measure of security against accidental discharge.
A fixed Novak® LoMount Carry rear sight and gold bead front sight.

Hi James, no sir, the 1753 is Matte Bluing over alloy steel >>> https://taloinc.com/product/ruger-gp-100-wiley-clapp-series-357-special-editions
Stay safe & have a great day!