SightsA.R.M.S.Sold by Brownells

A.R.M.S.

Ar-15 Low Profile Rear Sight - Ar-15 Flip-Up Adjustable Low Profile Rear Sight Black

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

Rear Flip-up

Low-profile folded height

Metal-reinforced Polymer

Construction with steel apertures

Snaps Into

Position under spring pressure when

Can Be

Retracted to the folded position

Flippable Apertures

For close-range 0-100m and longer-range

$99.99
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SKU: 100007995

Overview

This flip-up rear sight is built for shooters who want a compact, low-profile option that stays out of the way until needed. Its metal-reinforced polymer body and steel apertures are paired with a spring-loaded design that allows quick deployment and one-handed folding, making it well suited to rifles carried in the field or set up for varied shooting conditions. The flippable apertures provide a large opening for close-range use and a smaller opening for longer-range shooting, while the top notch offers an additional option for fast sighting. Front sight sold separately.

Why Hunters Choose the A.R.M.S.

Metal-reinforced Polymer

Steel apertures for a durable,

Flip-up Design

Snaps into position quickly under

Can Be

One hand for fast transitions

Flippable Apertures

Support close-range and longer-range sighting

Low-profile Folded

Height helps keep the sight

Key Features

  • Rear flip-up AR-15 rear sight with low-profile folded height.
  • Metal-reinforced polymer construction with steel apertures.
  • Snaps into position under spring pressure when the finger pad is depressed.
  • Can be retracted to the folded position with one hand.
  • Flippable apertures for close-range 0-100m and longer-range 100-300m use.
  • Top notch supports quick CQB sighting or targets at 500-600m.
  • Matte black finish; front sight sold separately.

Best Used For

  • Hunters wanting a low-profile rear sight that folds down when not in use
  • Users needing quick one-hand deployment and retraction during range transitions
  • Shooters working close-range to mid-range setups with selectable aperture options
  • AR-15 owners pairing a rear sight with a separately purchased front sight
  • Those preferring a matte black, metal-reinforced polymer sight for a compact setup

Specifications

AdjustableYes
Aperture OptionsLarge and small flippable apertures
AperturesSteel apertures
Blade FinishMatte black
Close Range Aperture Range0-100m
Cqb NotchYes
Deployed Height1 3/4 in
Folded Height5/8 in
Front Sight Available SeparatelyYes
Front Sight IncludedNo
Length2 1/4 in
Long Range Aperture Range100-300m
MaterialReinforced polymer
Model#71L-R Rear Sight
Mounting NoteDesigned to lean to the rear and should not obtain a vertical position when installed
Sight TypeRear flip-up sight
Width1 1/4 in

Pros

  • Metal-reinforced polymer construction with steel apertures for a durable, lightweight rear sight.
  • Flip-up design snaps into position quickly under spring pressure.
  • Can be folded down with one hand for fast transitions.
  • Flippable apertures support close-range and longer-range sighting options.
  • Low-profile folded height helps keep the sight compact on the rifle.
  • Matte black finish offers a subdued, practical appearance.

Considerations & Trade-offs

  • Rear sight only; the front sight is sold separately, so this is part of a two-sight setup rather than a complete sighting solution.
  • The sight is designed to lean to the rear and should not be installed in a vertical position, which may affect compatibility or setup expectations.
  • It uses flippable apertures with different intended ranges, so selecting the right aperture is part of using the sight effectively.
  • Folded height is low, but the sight still adds a deployed profile when raised, which is worth considering for compact setups.

Suggested Comparisons

  • AR-15 front sight
  • fixed rear sight
  • optics or red dot sight
  • flip-up iron sight set

Suggested Accessories

  • Sight adjustment tool
  • Front sight
  • Picatinny rail accessories
  • Protective storage case

Frequently Asked Questions

Is this a complete front-and-rear sight set?

No. The source data says the front sight is available separately. This product is the rear flip-up sight only.

What are the aperture options on this rear sight?

It has flippable apertures: a large aperture for close-range shooting (0-100m) and a small aperture for longer-range applications (100-300m).

How does the sight deploy and stow?

The sight snaps up into position under spring pressure when the finger pad is depressed, and it can be folded back down with one hand.

What materials are listed for this sight?

The source lists reinforced polymer with steel apertures, both in matte black.

Will this sight sit upright when installed?

The source says these sights are designed to lean to the rear and should not obtain a vertical position when installed.