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Steiner MK4 500 Lumen Battle Light 9072

SKU 9072-Steiner


The MK4 Battle Light by Steiner Optics is a modular weapon mounted light with interchangeable switch options to fulfill a wide range of tactical applications. The MK4 utilizes a low-profile design and is mounted close to the body of the weapon which virtually eliminates the barrel shadow and optimizes weapon handling. This battle light is compatible with one rechargeable li-ion battery (sold separately) or two CR 123A batteries.

Binoculars, Riflescopes, Battle Sights, Rings and Mounts are backed by Steiners Heritage™ Warranty. Night Vision Devices, Laser Aiming Solutions, Beacons, and Battle Lights are backed by Steiner's eOptics 2 Year Warranty


  • Power Output:500 Lumens
  • Beam:10°
  • Range:300 meters/330 yards
  • Battery Type:CR 123A
  • Battery Life:1.25 Hours
  • Weight:4.9oz
  • Item ConditionNew
  • Product TypeBattle Lights
  • UPC000381890726
  • MPN9072

Customer Reviews

Average Rating
January 2, 2021

I had no problem installing the light onto the AR-15 with its full length picatinny rail. I thought the supplied velcro was a poor way of attaching the pressure switch, so purchased the Magpul M-LOK Insight PEQ Tape Switch Mounting Plate, Part #: MAG631-BLK to attach the pressure switch to the handguard and it fit perfectly. The light appears to be of high quality so I purchased a second MK4 light for the Steyr AUG and found the rather large bolt used to attach the MK4 light onto the AUG's secondary picatinny rail was too large to mount the light. The bolt interferes with the primary picatinny rail, so my options are to either: remove the primary rail which will hopefully allow enough clearance for the bolt to be installed onto the secondary rail, locate a screw that does not have such a pronounced bolt or purchase the PuP light mount kit which attaches to the AUG's gas block. Have contacted Steiner Tech Support, they didn't have any suggestions re: mounting the pressure pad, (aside from adding more velcro) and they do not offer a screw with a smaller head so am disappointed with their support of the product.

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October 15, 2020

Light is bright enough to light up 2-300 yards, its push-button or pressure pad, so you can easily control always on vs momentary. It's lightweight and can easily be moved around to put it on either side of your rifle.

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January 11, 2021

Great light - solid, bright and appears durable. Good price too. Take Jims advice and get the Magpul mount, it's less than $20 and provides a bettersolution.

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July 28, 2021

Performed as expected..easy to mount and use

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