Primary Arms MRSC 21mm 3 MOA Green Dot Reflex Sight

The Primary Arms MRSC Micro Reflex Sight combines a compact 21mm lens with a daylight-bright 3 MOA green dot and AutoLive motion activation. Designed for compact and micro-compact pistols, it uses an RMSc footprint and a slim profile that helps minimize overhang when mounted on compatible slides or adapter plates.

Key Specifications

• The sight uses a 21mm objective lens for a compact mounting profile.
• The reticle is a 3 MOA green dot with daylight-bright illumination.
• AutoLive technology activates the sight with motion and turns it off when stationary.
• The optic provides 10 illumination settings for adjustable brightness.
• The mounting interface is an RMSc footprint for compatible milled slides and adapter plates.
• The sight uses a bottom-mounted CR2032 battery.
• Battery life is rated for up to 40,000 hours on the medium setting.
• The housing is made from 6061 aluminum with an anodized finish.
• The lens is fully multicoated for scratch and fog resistance.
• The optic has 1X power for non-magnified aiming.

With its compact footprint, motion-activated operation, and clear green reticle, the MRSC is a practical choice for compatible compact pistol setups. Its durable aluminum housing, adjustable illumination, and multicoated lens provide a balanced combination of everyday usability and dependable optical performance.

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