UTG OP3 Micro Red Dot Sight - 4 MOA, Matte Black, Low Profile Picatinny Mount

The UTG OP3 Micro Red Dot Sight is a compact reflex optic built for shooters who need a lightweight aiming solution without the bulk or cost of larger systems. This 4 MOA red dot sight mounts directly to any Picatinny rail via its low-profile base, making it equally at home on a pistol, carbine, or shotgun. Whether you're running a pistol for home defense, setting up a dedicated tactical carbine, or keeping a backup optic in your truck, the OP3 delivers the speed and simplicity of a red dot in a truly pocketable package.

Built from 6061-T6 aluminum and finished in matte black, the OP3 is precision machined to withstand serious use while staying affordable enough to justify on multiple guns. The 4 MOA dot strikes the right balance—bright enough to pick up quickly in varied lighting, precise enough for accurate shooting at combat distances. The low-profile mounting design keeps sight height minimal, which means less cheek weld adjustment when you transition between different firearms or add it to a gun that already sports iron sights or other optics.

The OP3 uses the Doctor footprint, a widely adopted reflex optic standard that opens up aftermarket battery cover, lens, and mounting options if you ever want to customize it. At this size and weight, it's an easy sell as a secondary sight on a defensive gun or a primary on a compact platform where real estate is tight. No bloat, no unnecessary features—just straightforward glass you can trust.

Key Features

• 4 MOA red dot reticle for rapid target acquisition and precise aiming at typical combat and hunting distances
• Low-profile Picatinny mount fits standard rails on pistols, rifles, and shotguns
• Precision-machined 6061-T6 aluminum body anodized matte black for durability and corrosion resistance
• Compact, lightweight footprint ideal for space-constrained builds and quick target transitions
• Doctor red dot optic footprint compatible with common aftermarket accessories

Specifications

Frequently Asked Questions

Will the UTG OP3 Micro Red Dot mount on my pistol or rifle?

Yes. The OP3 mounts to any standard Picatinny rail, making it compatible with most modern pistols, rifles, and shotguns that accept rail-mounted optics. The low-profile design keeps overall height compact, especially useful on guns with limited rail real estate.

What does the 4 MOA reticle mean?

MOA (minute of angle) describes the dot size at 100 yards. A 4 MOA dot is medium-sized—large enough to acquire quickly in dim light or fast-moving situations, but small enough for precise aiming at typical defensive and hunting distances. It's a practical all-around choice.

Can I use the OP3 alongside iron sights or other optics?

The OP3's low-profile mount is designed to minimize height above the rail. Cowitness or offset compatibility depends on your specific rifle or pistol setup and existing sighting hardware. Check your gun's rail configuration before purchase.

What are Doctor footprint optics?

The Doctor is a reflex optic standard that defines the shape and position of the mounting footprint. It's widely adopted across the industry, so the OP3 is compatible with various aftermarket batteries covers, lens protectors, and mounting adapters if you want to accessorize later.