Meprolight FRBs Iron Sights 4-Dot Rear Orange Front FDE
Meprolight
$189.99
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Meprolight
Meprolight FRBs Iron Sights 4-Dot Rear Orange Front FDE
The Meprolight FRBS Flip Backup Sights in Flat Dark Earth deliver battle-ready reliability with a distinctive 4-dot rear aperture and high-visibility orange Hyper-Bright front sight — engineered for shooters who demand fast target acquisition and rock-solid backup capability on any Picatinny-railed platform.
- Flip-up design deploys instantly and folds flat when not in use
- 4-dot rear aperture system for precise, intuitive sight alignment
- Orange Hyper-Bright front sight for rapid target acquisition in any lighting
- Fits standard Picatinny rails — compatible with AR-15, AR-10, and similar platforms
- Durable Flat Dark Earth (FDE) matte finish resists corrosion and glare
- Rugged construction built to withstand hard use in the field
Who This Is For
These BUIS are ideal for tactical shooters, home defenders, and carbine enthusiasts who run optics as their primary sighting system but refuse to operate without a dependable fallback. Whether you're running an AR pistol, rifle, or other Picatinny-equipped platform, the Meprolight FRBS gives you a confident secondary sight picture that deploys in a fraction of a second — a smart addition for competition stages, duty builds, or any serious defensive rifle setup.
Specifications
| Brand | Meprolight |
|---|---|
| Model | FRBS (403440) |
| Product Type | Flip-Up Backup Iron Sights (BUIS) |
| Rear Sight | 4-Dot Aperture |
| Front Sight | Orange Hyper-Bright Post |
| Finish | Matte Flat Dark Earth (FDE) |
| Rail Compatibility | Picatinny / MIL-STD-1913 |
| Sight Style | Flip-Up / Folding BUIS Set |
| Country of Origin | Israel |
Frequently Asked Questions
What platforms are the Meprolight FRBS compatible with?
The Meprolight FRBS flip-up backup sights are designed to mount on any standard Picatinny (MIL-STD-1913) rail. This makes them compatible with a wide range of modern sporting rifles and pistols including AR-15s, AR-10s, M-LOK or KeyMod handguards equipped with Picatinny segments, and other similarly railed tactical platforms. Always verify your rail spacing before mounting to ensure a secure fit.
Can I use these BUIS alongside a magnified optic or red dot sight?
Yes — the FRBS flip-up design is purpose-built for co-witnessing use alongside optics. When your primary red dot or magnified scope is in use, the sights fold completely flat and stay out of your sight picture. In the event of an optic failure, they spring up instantly, giving you an immediate and reliable secondary aiming solution. They can be configured for absolute co-witness or lower-third co-witness depending on your optic's mount height.
What makes the orange Hyper-Bright front sight different from standard iron sights?
Meprolight's Hyper-Bright orange front sight post is engineered for dramatically faster target acquisition compared to traditional black-on-black iron sights. The vivid orange color stands out sharply against most backgrounds and lighting conditions — including low light and cluttered environments — allowing your eye to naturally and quickly center the front post within the rear aperture. This makes the FRBS set especially effective for high-stress defensive or competition scenarios where split-second accuracy matters.
