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Kensight M1 Carbine Adjustable Rear Sight, Black – 4140 Steel Peep

UPC: 755377861029

$43.66

6 in stock

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Description

The old flip-style sight on a lot of M1 Carbines does the job, but it leaves plenty on the table when it comes to precision. This Kensight rear sight steps in as a fully adjustable peep that recreates the original WWII-era milled sight, blending that authentic look with real functional upgrades. It's the kind of part that makes a carbine feel dialed in instead of just close enough.

What Sets the Kensight M1 Carbine Rear Sight Apart

The body is Wire-EDM machined from a single billet of 4140 chrome-moly steel, then heat treated to a hardness of RC 38-40. That construction method holds tighter tolerances than typical CNC work, which is what gives you those crisp, audible clicks and repeatable adjustments. Windage moves click by click for consistent point of impact changes, and it's built to hold zero through the recoil of regular shooting.

Dialing In Elevation on the Carbine Sight

Elevation is handled by sliding the peep aperture ramp forward or back into one of four detent positions, marked 1, 2, 2.5, and 3 to indicate range to the target. The 0.085-inch peep aperture gives you a clean, fast sight picture whether you're plinking at 50 yards or stretching out to a hundred. Folks who've run it report a noticeable jump in accuracy over the factory dual-aperture flip sight, especially if the original was shooting low.

Fitting the Kensight to Your M1 Carbine

Here's the part worth knowing up front: this sight is not a drop-in. Kensight intentionally cuts the dovetails slightly oversized so the sight can be fitted to your specific slide, since every manufacturer's dovetail runs a little different. That means some careful filing on the sight base and a proper drift and staking to lock it in. It works on original G.I. carbines as well as commercial copies like Auto-Ordnance and Universal, though a competent gunsmith is the smart call for installation. Do it right and you've got a solid, authentic upgrade that looks and performs like it belongs there.

Key Specifications

  • Manufacturer: Kensight Mfg
  • Manufacturer Part Number: 860-102
  • UPC: 755377861029
  • Model: M1 Carbine
  • Sight Position: Rear
  • Style: Adjustable Peep
  • Color: Black
  • Material: 4140 Chrome-Moly Steel
  • Construction: Wire-EDM Machined
  • Hardness: RC 38-40
  • Aperture Diameter: 0.085 in
  • Windage Adjustment: Click-Adjustable
  • Elevation Adjustment: 4-Position Ramp (1, 2, 2.5, 3)
  • Warranty: Limited Lifetime

What’s Included

  • Kensight M1 Carbine adjustable rear sight
  • Dovetail wedge for installation
  • Installation instructions

Frequently Asked Questions

Does the Kensight M1 Carbine rear sight just drop into the existing dovetail?

No, it does not slide right in. Kensight cuts the dovetail slightly oversized on purpose so it can be fitted to your particular slide, since dovetail dimensions vary between manufacturers. Plan on some careful filing to the sight base and proper staking, and a gunsmith is recommended for the cleanest result. Do not file on your slide.

Will this sight fit commercial M1 Carbine copies like Auto-Ordnance or Universal?

Yes. It works on original G.I. carbines as well as commercial reproductions, including Auto-Ordnance and Universal Firearms models. Universal carbines in particular may need a bit more fitting to seat properly, so factor that in if you're running one.

How do the elevation settings work on this rear sight?

Elevation is set by sliding the peep aperture ramp forward or rearward into one of four detent positions, marked 1, 2, 2.5, and 3. Those numbers correspond to range increments to your target, so you can quickly index for the distance you're shooting. Windage is handled separately with click adjustments.

Is this a real upgrade over the original flip-style carbine sight?

For most people, yes. The fully adjustable peep gives you precise windage and elevation control that the two-position flip sight simply can't match. Owners who switched over often report tighter groups and corrected point of impact, especially when the factory sight was shooting low.

Additional information

UPC

755377861029

Manufacturer

Manufacturer Part Number

860-102

Color

Black

Model

Style

Adjustable

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