These sights may or may not be fixed. There exists a (Special Edition TALO version of the 1753) that has adjustable rear Novak Sights. You will need to contact Buds to verify whether or not this is that "Special Edition" (The title description suggests that it is) at (859) 368-0371 (available 9AM to 9PM EST Monday through Friday). youtube.com/watch?v=YmGaf8vT3WU -- thetruthaboutguns.com/2016/08/daniel-zimmerman/gun-review-wiley-clapp-ruger-gp100-revolver/

Yes they are fixed sights Here are the specs Fixed sights Number: 1753| Caliber: 357 Mag 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 CA ApprovedNo MA Approved & CertifiedNo Available From Gallery of Guns TALO • Triple-locking cylinder is locked into the frame at the front, rear and bottom for more positive alignment and dependable operation shot after shot. • Patented grip frame design easily accommodates a wide variety of custom grips. • Takedown of integrated subassemblies requires no special tools and allows for easy maintenance and assembly. • Patented transfer bar mechanism provides an unparalleled measure of security against accidental discharge. *******************• A fixed Novak® LoMount Carry rear sight and gold bead front sight.

From RUGER web site ******Fixed sights Number: 1753|
Caliber: 357 Mag
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
CA ApprovedNo
MA Approved & CertifiedNo
Available From Gallery of Guns TALO
• Triple-locking cylinder is locked into the frame at the front, rear and bottom for more positive alignment and dependable operation shot after shot.

• Patented grip frame design easily accommodates a wide variety of custom grips.

• Takedown of integrated subassemblies requires no special tools and allows for easy maintenance and assembly.

• Patented transfer bar mechanism provides an unparalleled measure of security against accidental discharge.

*******************• A fixed Novak® LoMount Carry rear sight and gold bead front sight.