NcStar Pro AR Flip-Up Rear Iron Sight for AR-15
NCSTAR
$38.99
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NCSTAR
NcStar Pro AR Flip-Up Rear Iron Sight for AR-15
The NcStar Pro Series AR Flip-Up Rear Sight is a precision-engineered backup iron sight (BUIS) designed to keep your AR-15 or any Picatinny-railed rifle mission-ready when your optic fails or conditions demand a fast, reliable secondary sighting solution.
- Spring-loaded flip-up design deploys instantly with a single button press
- Low-profile fold-flat design clears most rifle scopes and red dots
- Dual-aperture A2-style steel rear sight for CQB and long-range versatility
- Lightweight aluminum main body weighs just 2.3 oz for minimal added load
- Mounts securely to any Mil-STD 1913 Picatinny rail system
- Windage knob and adjustment screw allow precise zero customization
Who This Is For
This sight is ideal for AR-15 owners, competitive shooters, and tactical enthusiasts who want a dependable backup iron sight without sacrificing their primary optic's clearance. Whether you're building a duty rifle, a home-defense carbine, or a range setup, the NcStar Pro Flip-Up Rear Sight delivers solid, no-nonsense performance at an accessible price point.
Specifications
| Brand | NcStar |
|---|---|
| Series | Pro Series |
| Type | Flip-Up Backup Rear Sight (BUIS) |
| Weight | 2.3 oz |
| Main Body Material | Aluminum |
| Aperture & Hardware | Steel A2 Dual Rear Aperture |
| Deployment | Spring-Loaded, Button Activated |
| Rail Compatibility | Picatinny Mil-STD 1913 |
| Adjustments | Windage Knob & Elevation Screw |
| Includes | Mounting Tool |
| Profile | Low-Profile Fold-Flat Design |
Frequently Asked Questions
Will this flip-up rear sight co-witness with my red dot or holographic optic?
Yes. The NcStar Pro Flip-Up Rear Sight is designed with a low profile that folds flat beneath most optics, and when deployed it is compatible with standard AR-15 co-witness heights. For absolute or lower-third co-witness, check the specific height of your optic mount to confirm compatibility before mounting.
Is this rear sight compatible with standard AR-15 front sights?
The NcStar Pro Rear Sight is designed to pair with standard A2-style or folding front sights commonly found on AR-15 and M4-pattern rifles. For best results, use it alongside a matching flip-up or fixed front sight to establish a proper sight picture with both apertures.
How do I adjust windage and elevation after mounting?
Windage is adjusted using the integrated windage knob on the side of the sight body — click adjustments allow precise left/right zeroing. Elevation is set via the adjustment screw, which is accessible with the included mounting tool. It is recommended to zero the sight at your preferred distance (typically 25 or 50 yards) before field use.
