HOUSON Flip Up BUIS Set

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The HOUSON Flip Up Sights are a tactical backup iron sight set designed to mount on standard 21mm Picatinny rails, offering rapid transition capability when a primary optic fails or needs to be bypassed. The set includes both a front and rear sight that flip down flat when not in use, keeping the profile low and unobtrusive during normal optic operation. Overall they represent a solid budget-friendly option for shooters who want a reliable secondary sighting system without a significant investment.
Key Features & Specs
| Compatibility | Fits standard 21mm Picatinny rail systems |
|---|---|
| Design | Flip-up folding mechanism for low-profile storage when primary optic is in use |
| Transition | Rapid transition BUIS design allows quick deployment alongside or through magnified optics |
| Set Contents | Includes both front and rear backup iron sights as a matched pair |
| Material | Constructed from aluminum alloy for a balance of lightweight use and durability |
| Mounting | Tool-free or minimal-tool installation via Picatinny clamp system |
| Use Case | Intended as a backup sighting solution, model reference RT11 |
Best for: Budget-conscious rifle owners and casual range shooters who want a dependable set of backup iron sights to complement their primary optic on a Picatinny-railed platform.