To determine the rear sight height that you need, measure the rear blade as shown.  We do not know what height you have on YOUR gun, some manufacturers have variance between individual guns of the same model. 1911 Low Mount Rear Sight 1911 Low Mount Rear Sight 1911 Low Mount Rear Sight

1911 Low Mount Rear Sight

$48.75

The 10-8 Performance rear sight is precision CNC machined from heat treated 4140 bar stock to better resist the nicking and denting that is typical with the wear and tear of daily carry. All 10-8 sights feature a U notch for rapid, intuitive alignment with dot such as on our tritium insert and fiber optic front sights. The rear face is serrated at 40 lpi to reduce glare in varied lighting conditions.  The sight blade is thick enough to allow setting in tritium vials as dots or bars if one so chooses, but we recommend leaving them without inserts in order to draw the eye toward the front sight.  The sight body is contoured and dehorned for comfortable handling and carry.  All rear sights feature a plain black blade finished in matte black oxide. 

  • FITS: Novak LoMount ® dovetail
  • Notch widths:
    • .125" - preferred for greatest accuracy
    • .140" - most popular, good all purpose width
    • .156" - fastest notch for .125" wide front blades or XS Dot front sights
      • Choose the .156" notch, .325" height to use with the XS Standard Dot for 1911, which is .185" tall.

Most factory sight setups feature a rear notch that is the same width as the front blade - ie. typically a .125" wide rear notch with .125" wide front sight.  This type of setup provides a relatively tight visual window that optimizes precision for maximum accuracy.  For most shooters with good vision, this combination works fine.  An increasingly popular combination is the .140" rear notch with a .125" width front blade.  For most shooters, this combination offers improved speed on close range targets without degrading perceived accuracy out to 25 yards.  The .156" extra wide notch is compatible with the XS Standard Dot (.110” width) or XS Big Dot (.161” width)  front sights, and also makes for a very quick combination in conjunction with our .125" wide front sights.  Our recommended "signature" set is the .140" wide rear notch with a .100" wide fiber optic front, or the .156" rear with the .125" brass bead front.

Our 02 series sights will fit into the popular Novak LoMount ® dovetail, which is found on fixed sight 1911s offered by countless manufacturers.  Please note that our sights are made to consistent dimensions, and we can't be 100% certain how any given manufacturer cuts their dovetails. Our sights usually fit with some hand filing of the sight base. Unmodified GI dovetail slides will need to be machined.

**The 02 series sights DO NOT fit: Kimber, ParaOrdnance, Taurus, Magnum Research, or S&W 1911s.  The Kimber and Magnum Research 1911s take  Kimber Front and Rear Sights, and are not compatible. We no longer offer front/rear sights for the Kimber.


The rear sights are available in heights to match your existing rear sight height, and will therefore be directly compatible with your existing front sight.  You will want to measure your existing rear sight before ordering.  If your gun already has a LoMount style rear sight on it, our rear sight will be directly compatible with your existing front sight in both height and width.

Please note that Springfield Armory fixed sight 1911s (Loaded, TRP, Professional, EMP) use both .325" and .375" tall sights.  It is not possible for us to predict what is on your gun, as each individual sample can vary without regard for model number etc.  It is best for you to measure the sight on YOUR gun to be sure.

Choose from .325" ("standard") blade height or .375" ("extra tall") blade height (most common on Officer/Defender length 1911s or various Springfield fixed sight 1911s). The .375" is now only available in .140" notch.

The left front of the sight has a small angle machined into it. This is for easier installation, and is not a machining error.

Please note that 1911 Low Mount dovetails vary wildly in dimensions. Our sights are meant to provide an interference fit, and not be dependent on the set screw for retention. It is not uncommon for some dovetails to be too large for our sight. 

 

Read our article about selecting sights.

Full Description
Height/Notch Width *
Qty
  • Description

    The 10-8 Performance rear sight is precision CNC machined from heat treated 4140 bar stock to better resist the nicking and denting that is typical with the wear and tear of daily carry. All 10-8 sights feature a U notch for rapid, intuitive alignment with dot such as on our tritium insert and fiber optic front sights. The rear face is serrated at 40 lpi to reduce glare in varied lighting conditions.  The sight blade is thick enough to allow setting in tritium vials as dots or bars if one so chooses, but we recommend leaving them without inserts in order to draw the eye toward the front sight.  The sight body is contoured and dehorned for comfortable handling and carry.  All rear sights feature a plain black blade finished in matte black oxide. 

    • FITS: Novak LoMount ® dovetail
    • Notch widths:
      • .125" - preferred for greatest accuracy
      • .140" - most popular, good all purpose width
      • .156" - fastest notch for .125" wide front blades or XS Dot front sights
        • Choose the .156" notch, .325" height to use with the XS Standard Dot for 1911, which is .185" tall.

    Most factory sight setups feature a rear notch that is the same width as the front blade - ie. typically a .125" wide rear notch with .125" wide front sight.  This type of setup provides a relatively tight visual window that optimizes precision for maximum accuracy.  For most shooters with good vision, this combination works fine.  An increasingly popular combination is the .140" rear notch with a .125" width front blade.  For most shooters, this combination offers improved speed on close range targets without degrading perceived accuracy out to 25 yards.  The .156" extra wide notch is compatible with the XS Standard Dot (.110” width) or XS Big Dot (.161” width)  front sights, and also makes for a very quick combination in conjunction with our .125" wide front sights.  Our recommended "signature" set is the .140" wide rear notch with a .100" wide fiber optic front, or the .156" rear with the .125" brass bead front.

    Our 02 series sights will fit into the popular Novak LoMount ® dovetail, which is found on fixed sight 1911s offered by countless manufacturers.  Please note that our sights are made to consistent dimensions, and we can't be 100% certain how any given manufacturer cuts their dovetails. Our sights usually fit with some hand filing of the sight base. Unmodified GI dovetail slides will need to be machined.

    **The 02 series sights DO NOT fit: Kimber, ParaOrdnance, Taurus, Magnum Research, or S&W 1911s.  The Kimber and Magnum Research 1911s take  Kimber Front and Rear Sights, and are not compatible. We no longer offer front/rear sights for the Kimber.


    The rear sights are available in heights to match your existing rear sight height, and will therefore be directly compatible with your existing front sight.  You will want to measure your existing rear sight before ordering.  If your gun already has a LoMount style rear sight on it, our rear sight will be directly compatible with your existing front sight in both height and width.

    Please note that Springfield Armory fixed sight 1911s (Loaded, TRP, Professional, EMP) use both .325" and .375" tall sights.  It is not possible for us to predict what is on your gun, as each individual sample can vary without regard for model number etc.  It is best for you to measure the sight on YOUR gun to be sure.

    Choose from .325" ("standard") blade height or .375" ("extra tall") blade height (most common on Officer/Defender length 1911s or various Springfield fixed sight 1911s). The .375" is now only available in .140" notch.

    The left front of the sight has a small angle machined into it. This is for easier installation, and is not a machining error.

    Please note that 1911 Low Mount dovetails vary wildly in dimensions. Our sights are meant to provide an interference fit, and not be dependent on the set screw for retention. It is not uncommon for some dovetails to be too large for our sight. 

     

    Read our article about selecting sights.

  • Reviews

    Reviews

    Ken L.

    10-8 performance 1911 rear sight

    This rear sight provides me with everything I ask for in a great, clean sight picture for my 1911s. Does not snag on clothing while carrying concealed, fast target acquisition, and the ability to perform one handed slide manipulations if needed. Once installed, it is extremely durable and solid. Hilton has a winner here!
    Bruce

    Rear sight works!

    My TRP was shooting 1.5" high at 5 yards with the .375 rear Novak sight. I ordered .325 with the .140 U-notch. What a difference! Dead on, fast, clean sight picture. Even the price was right. 5 stars.
    Mike

    1911 U notch rear sight

    Great quality product. I have purchased quite a few 10-8 parts for 1911s. This is my first sight purchase, and I am very pleased with it. 10-8 makes quality parts that you won’t be disappointed in if you do your part and do a little research to ensure you get the right part.
    Charlie

    Rear

    Solid. Bought (2). Minimal filing back side to fit on first pistol...quite a bit of filing on bottom to fit second pistol. Pleased. No complaints.
    Michael Frangoudakis

    Low mount rear sight

    Great sight. Replaced the Novak rear on my sons Colt Competition. This is the fourth 10-8 sight I’ve installed. Three on my M&P’s and my sons Colt. Love the sight picture.
    Ken L.

    10-8 1911 rear sight

    This is by far the best 1911 rear sight I have found. Fit my Springfield TRP perfectly. Paired with a tritium front it gives an excellent sight picture for my aging eye balls. Very durable and solid.
    Dan H

    10-8 1911 rear sight.

    I’ve always liked these rear sights and have carried them on my Glocks for more than ten years. I bought this rear sight to replace the factory Novak on my SA Range Officer Operator. I had to drift the factory sight out with a punch and small hammer. The 10-8 sight slid right into the dovetail all the way to the center with thumb pressure. I had to peen the bottom of the sight in four places with a punch to take up the slack and get a press fit. I was prepared to file fit the sight or at least have to drift it into place so the loose fit was a little disappointing.
    Jeff

    10-8 rear sight review

    This is a top notch sight. I have used many 10-8 products over the years to include 1911 and M&P sights, Glock and M&P base plates and the M&P magwell. I’ve used these products are used in real-world conditions, and I highly recommend any 10-8 product to those searching for hard-use equipment.
    Alex

    Perfect

    I placed this blacked U on my Vbob. I did not care for the 2 dot style of the stock sight. This rear sight fit perfect and installation was easy. In my opinion the gun is much more enjoyable to shoot with the improved rear sight. 10-8 performance had exactly what I needed.
    Patrick Scalise

    10-8 1911 sights

    Awesome rear sight with the U-notch. It really transformed my Springfield Armory TRP sights without replacing the front. Pretty easy install - only minor fitting was required.