The Primary Arms Classic Series 21mm Micro Reflex Sight – PA-CLx-MRD-AD is a reliable, budget-friendly red dot optic ideal for handguns, pistol-caliber carbines, and rifles. Engineered for durability and rapid target acquisition, this sight offers a 3 MOA red dot reticle that provides fast, precise aiming without obscuring the target.
At its core is AutoLive technology, which conserves battery life by powering down the sight when not in use and instantly reactivating upon movement. This feature significantly extends runtime and ensures the optic is always ready when you are.
Built with a hardcoat anodized 6061 aluminum housing, the sight is IP67 waterproof, shockproof, and designed to withstand heavy recoil. The 21mm objective lens delivers a wide field of view, while the 10 illumination settings, including night vision compatible options, provide versatility in any lighting condition.
The optic is compatible with Shield RMSc footprint mounts, making it suitable for a wide variety of optics-ready pistols and custom slide cuts.
Key Features:
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Reticle: 3 MOA Red Dot
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Lens Diameter: 21mm
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Illumination: 10 Brightness Settings (2 NV-compatible)
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AutoLive Motion-Sensing Technology
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Housing: 6061 Aluminum, Hardcoat Anodized
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Waterproof Rating: IP67
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Battery Life: Up to 40,000 Hours (medium setting)
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Mounting Footprint: Shield RMSc
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Weight: 1 oz (without mount)
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Includes: Low-profile mount, battery, tools
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Warranty: 1-Year
FAQ:
Q: What footprint does this reflex sight use?
A: It uses the Shield RMSc footprint, compatible with many modern optics-ready handguns.
Q: Is the red dot always on?
A: No — it features AutoLive, which turns the sight off when idle and back on with movement.
Q: Is this sight good for pistols or rifles?
A: Yes — it’s compact and rugged enough for handguns, PCCs, shotguns, or offset rifle mounts.
Q: Does it work with night vision?
A: Yes — it has two NV-compatible brightness settings for low-light or NV gear use.
Brought to you by Black Bayou Armory.