The Wilson Combat Serrated Blade Rear Sight, Square Notch (Wilson Combat part no. 1107-SQ) in black is machined from hardened chromoly steel and built specifically for the Ruger GP100 and New Model Blackhawk revolver series, matching the fitment of Wilson Combat’s U-notch version but with a square notch reference that some shooters prefer for precise alignment. The fully adjustable rear sight delivers a cleaner sight picture along with dependable windage and elevation adjustment, letting a shooter fine-tune point of impact for different loads, distances, and conditions. A partially serrated blade face cuts glare, and the black oxide finish resists wear from holster and field use. It’s a practical upgrade for GP100 and Blackhawk owners who want a square, precise sight reference.

Key Specifications

• Fits Ruger GP100 and New Model Blackhawk revolvers only, per Wilson Combat’s fitment note.
• Machined from hardened chromoly steel for durability under recoil and holster wear.
• Finished in black oxide to resist glare and corrosion.
• Uses a partially serrated square notch blade design for a precise sight reference.
• Cut with a .135-inch notch width and .099-inch notch depth.
• Fully adjustable for windage and elevation to fine-tune point of impact.

Frequently Asked Questions

Will this rear sight fit other Ruger revolvers? No, Wilson Combat specifically notes this sight will only fit the Ruger GP100 and New Model Blackhawk series.

Why choose a square notch over a U-notch? Some shooters find a square notch gives a more precise, repeatable alignment reference against a square front post than a U-notch’s curved profile.

Can I adjust point of impact with this sight? Yes, it’s fully adjustable for both windage and elevation, letting you fine-tune impact for different loads and distances.

Buy the Wilson Combat Square Notch Rear Sight for Ruger GP100

For shooters who prefer a square notch reference, this Wilson Combat rear sight brings the same chromoly durability to that sight picture. Order it from our Lubbock, Texas gun shop for insured shipping right to your door, and browse the rest of our gun sights selection to find a matching front sight.