Description
The LaserMax Enclosed Red Dot Sight is a closed emitter red dot for pistols with a 3 MOA red dot in a matte black housing. It is part of the LaserMax red dot line, built for pistols with an RMR or Glock MOS optic cut. The goal is simple: a bright, crisp dot that is on when you need it and easy on batteries when you do not.

LaserMax Enclosed Red Dot Sight Overview
LaserMax catalogs this sight as LM-ERDS. Because the emitter is sealed inside the housing, rain, lint and dust cannot block the dot the way they can on an open sight. That makes an enclosed sight a strong choice for duty and carry guns that see weather and daily wear. LaserMax rates battery life at up to 50,000 hours.
Automatic Brightness
An external light sensor reads the light around you and adjusts dot brightness on its own, so the dot is not too dim in sunlight or too bright indoors. You can also pick a manual brightness setting if you prefer to control it yourself.

Shake-Awake Power Saving
The sight powers down when it sits still to save the battery, then wakes as soon as the gun moves. On a gun that lives in a safe, a nightstand or a holster, the dot is ready when you pick it up without leaving it running around the clock.
Mounting
LaserMax lists the LM-ERDS for optics-ready pistols cut for the RMR pattern or set up with Glock MOS plates. Confirm which plate or cut your pistol uses, then mount with the correct screws, a small drop of medium thread locker and the torque value your pistol maker lists.

Why a Red Dot
With iron sights you have to line up a rear notch, a front post and the target, and your eye can only focus on one of them. With a red dot you keep both eyes open, focus on the target and put the dot on it. Most shooters see faster first shots and better follow up shots once they learn to present the gun so the dot lands in the window.
Care and Use
Keep the lens clean with a soft cloth or lens pen, and check that the mounting screws are tight after the first few range trips. A red dot is only as good as its mount, so take a minute to set it up right. Practice with it in dry fire at home and live fire at the range until finding the dot is automatic.
Zeroing Tips
Most pistol shooters zero a red dot at 15 to 25 yards. Start close to get on paper, then move back and adjust. Fire groups of three to five shots before each change, and confirm zero with the ammunition you plan to carry.
Battery Care
Replace the battery once a year on a defensive gun, even if the dot still looks fine, and keep a spare in your range bag. Wipe the lens with a soft cloth or lens pen, not a shirt tail, to keep the coatings clean. If the dot seems dim or flickers, check the battery and contacts first.
Ordering and Transfer
When you order a firearm from MAG5 Firearms, we ship it to the licensed dealer you choose. Your dealer completes the ATF Form 4473 and the background check, and may charge a transfer fee. Local buyers can complete the transfer at our shop. Bring a valid ID, and check your state waiting period before you plan a hunt or a range trip.
Specifications
- Brand: LaserMax
- Model: LM-ERDS
- UPC: 028478155688
- Reticle: 3 MOA red dot
- Finish: matte black
- Brightness: automatic, plus manual settings
- Power saving: motion activated wake
- Battery life: up to 50,000 hours
Before You Buy
Optics do not require an FFL transfer. Confirm your slide cut or optic plate matches the mounting footprint of this sight before you order.
Who It Is For
The LaserMax Enclosed Red Dot Sight is a great fit for carry and duty pistol owners who want the weather resistance of an enclosed emitter with long battery life.
Buy the LaserMax Enclosed Red Dot Sight at MAG5 Firearms
MAG5 Firearms is a family-owned shop in Collegeville, Pennsylvania. Optics do not require an FFL transfer, so the LaserMax Enclosed Red Dot Sight ships straight to your door. Browse our full selection of red dot sights for more optics. For factory details, visit LaserMax.







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