A.R.M.S. Polymer Folding Front and Rear Sight Set
A.R.M.S., Inc.
$150.69
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A.R.M.S., Inc.
A.R.M.S. Polymer Folding Front and Rear Sight Set
The A.R.M.S. #71L Front and Rear Folding Sight Set delivers a reliable, low-profile iron sight solution for AR-platform rifles, combining metal-reinforced polymer construction with genuine steel apertures for lasting durability and accuracy.
- Steel apertures on the rear sight resist distortion unlike thin plastic alternatives
- Metal-reinforced polymer bodies provide lightweight strength and impact resistance
- Compatible with all universal 1913 Picatinny dovetail rails for broad versatility
- Low-profile folded height of just .600" keeps your optics co-witness options open
- Matched front and rear set ensures consistent sight alignment right out of the box
- Quick-deploy folding design transitions from stowed to ready position in seconds
Who This Is For
The A.R.M.S. #71L Sight Set is ideal for AR-15 and MSR owners who want dependable backup iron sights (BUIS) that won't add unnecessary bulk or weight. Whether you're running a primary optic and need a trustworthy co-witness fallback, or you simply prefer the simplicity and proven performance of folding iron sights, this matched set is a practical, quality-focused upgrade for home defense, range use, or duty builds.
Specifications
| Brand | A.R.M.S., Inc. |
|---|---|
| Model | #71L Front & Rear Sight Set |
| Construction | Metal-reinforced polymer with steel apertures |
| Folded Height | .600" from top of receiver |
| Rail Compatibility | Universal 1913 Picatinny dovetail rails |
| Aperture Material | Steel (rear sight) |
| Sight Type | Folding front and rear (BUIS) |
| Gas Block Compatibility | Not for use on dovetail gas blocks |
| Includes | Front sight and rear sight |
Frequently Asked Questions
Are these sights compatible with my AR-15 or other MSR platform?
Yes. The A.R.M.S. #71L sight set is designed to attach to any standard 1913 Picatinny dovetail rail, making it compatible with the vast majority of AR-15, AR-10, and other modern sporting rifles that feature a flat-top upper receiver. Note that these sights are not intended for use on dovetail gas blocks, so ensure your front sight is mounted on a dedicated rail section rather than a dovetail-style gas block.
Can these folding sights be used as backup iron sights (BUIS) with a red dot or magnified optic?
Absolutely. The .600" folded height and quick-deploy folding mechanism make the #71L set an excellent choice for co-witness or offset backup use alongside red dot sights and low-powered variable optics. When folded flat, they sit below the sight plane of most optics without obstruction, and deploy rapidly if your primary optic fails or loses power.
Why do the steel apertures matter compared to all-plastic rear sights?
Thin plastic apertures can warp, crack, or deform under heat, heavy use, or impact — potentially distorting your sight picture over time. The A.R.M.S. #71L rear sight uses genuine steel apertures that maintain their shape and dimensions throughout the life of the sight, ensuring a consistent, reliable sight picture every time you deploy them.
