Sights10-8 PerformanceSold by Brownells

10-8 Performance

1911 National Match U-Notch Rear Sight - Nm U-Notch Rear Sight

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

National Match

Modern features and retro appearance

Fits Gi-pattern

No milling required

Extra-thick Blade

Is sized for Colt .175"

Wide .140"

Notch supports fast front-sight acquisition

Front Blade

Ledge aids one-hand slide racking

$37.99
View on Brownells

You'll be taken to Brownells to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: 100004375

Overview

Built for GI-pattern 1911 pistols, this rear sight is intended for shooters who want a National Match-style upgrade without requiring slide milling. The wide .140" notch is designed to make front-sight acquisition quick and straightforward, while the extra-tall blade is sized to work with Colt .175" high front sights or similar aftermarket options. A front ledge adds a practical one-hand slide-racking point, and the steel construction with matte black finish keeps the profile simple and functional. It’s a good fit for carry or range use when a clear sight picture and a more traditional look are both priorities.

Why Hunters Choose the 10-8 Performance

Fits Gi-pattern

No milling required

Wide .140"

Notch supports easy, fast front

Extra-thick Blade

Is tall enough for Colt

Front Blade

Ledge allows one-hand slide racking

Steel Construction

Matte black finish and National

Key Features

  • National Match style rear sight with modern features and retro appearance
  • Fits GI-pattern 1911 dovetails, including current-production Colts, with no milling required
  • Extra-thick blade is sized for Colt .175" high front sights or similar aftermarket options
  • Wide .140" notch supports fast front-sight acquisition for precise targeting
  • Front blade ledge aids one-hand slide racking
  • Steel construction with matte black finish

Best Used For

  • GI-pattern 1911 owners wanting a dovetail rear sight for current-production Colts without milling
  • Shooters prioritizing a wide notch for faster front-sight acquisition and precise target alignment
  • Users who want a National Match style sight with a retro appearance and modern features
  • Carry-minded 1911 owners looking for a rugged rear sight with a one-hand slide-racking ledge

Specifications

Blade FinishMatte black
Blade ThicknessExtra-thick blade
FitDovetail for GI-pattern 1911 pistols, including current-production Colts
Front Sight CompatibilityColt .175" high front sight or same-height aftermarket alternatives
Height.315"
MaterialSteel
Notch Height.125"
Notch Width.140"
One Hand Slide Racking LedgeYes

Pros

  • Fits GI-pattern 1911 pistols, including current-production Colts, with no milling required.
  • Wide .140" notch supports easy, fast front sight acquisition.
  • Extra-thick blade is tall enough for Colt .175" high front sight compatibility.
  • Front blade ledge allows one-hand slide racking.
  • Steel construction with matte black finish and National Match styling.

Considerations & Trade-offs

  • Fits GI-pattern 1911 pistols with a dovetail rear sight cut, so it is not a universal 1911 upgrade and may not suit pistols outside that pattern.
  • The sight is specified for use with Colt .175" high front sight or same-height aftermarket alternatives, so front-sight compatibility should be checked before purchase.
  • Its National Match style and wide U-notch are geared toward a clear, fast sight picture, but that setup may feel less traditional than a standard GI rear sight.
  • The matte black steel finish is practical and subdued, but the product details do not specify any additional finish protection beyond that description.

Suggested Comparisons

  • 1911 rear sights
  • 1911 front sights
  • 1911 sight sets
  • 1911 slide racking sights

Suggested Accessories

  • 1911 front sight
  • 1911 sight installation tool
  • gunsmithing punch set
  • slide racking plate

Frequently Asked Questions

Will this rear sight fit a GI-pattern 1911 without machining?

Yes. The description says it fits the dovetail of GI-pattern 1911 pistols, including current-production Colts, with no milling required.

What front sight height is this rear sight intended to work with?

It is described as tall enough to work with a Colt .175" high front sight or same-height aftermarket alternatives.

What kind of sight picture does the U-notch provide?

The wide .140" notch is described as aiding easy, fast acquisition of the front sight for precise targeting.

Does this rear sight have any feature for one-handed slide manipulation?

Yes. The front ledge on the blade is described as aiding in one-hand slide racking.

What are the listed specifications for this sight?

The provided specs list it as steel with a matte black finish, .315" high, with a .140" wide x .125" high notch.