Steiner MK7 Remington 870 Battlelight

Here’s another one for the “new to me” category. Steiner Optics has an illumination product specific to the shotgun platform. While researching weapon lights for a fun project, I stumbled across the MK7 Battlelight, a magazine tube endcap replacement that provides 350 lumens of forward throw light. The complete unit only adds four inches of overall length,

My one main concern revolves around switch placement. The button is pretty far forward for a ‘momentary on’ type of use especially for my project which features a shorter barrel. However, I would like to install/use one myself before passing judgement one way or the other.

Street price hovers right around $180.


Steiner MK7 Shotgun Battlelight

The compact, ergonomic design of this 350-lumen mini-light makes it the perfect tactical shotgun light. A shotgun end cap attaches directly into the magazine tube and replaces the factory spring cap.

  • Weight 4.1 oz.
  • Submersible to 3 meters
  • White Light LED Recoil Resistant
  • Powered by: One CR 123A Battery
  • Push Button Switch
  • Item No. 9075 – Remington 870/1100/1187
  • Item No. 9076 – Mossberg 500
  • Item No. 9077 – Beretta 1301
  • Item No. 9078 – Benelli M4/Nova

Steiner Optics’ versatile and powerful Mk7 Battle Light LED Weaponlight is the ideal compact illumination companion for your firearm. While the light fits comfortably in the hand, it comes with a Picatinny/Weaver rail mount and an end cap for Remington 870/1100/1187 shotguns. The cap attaches directly into the magazine tube and replaces the factory spring cap. Sporting two outputs from a low utilitarian 10 to a high 350 lumens, its Total Internal Reflection (TIR) lens is factory-focused to produce a smooth 10° beam without holes or hot spots that has been optimized for maximum throw.

To cut weight and reduce user fatigue the light is made of a lightweight aluminum alloy and weighs in at just 4.1 oz. Designed for durability, the housing features a corrosion and scratch-resistant anodized finish, is O-ring sealed to make it waterproof and submersible to 9.8′, and its broad operating temperature enables its use in most weather and conditions.


LE – Science – OSINT.
On a mission to make all of my guns as quiet as possible.
Twitter: @gunboxready
Instagram: @tfb_pete


  • Nameson

    Trading a mag extension for lumens? Hmm.

    • Haulin’ Oats

      it makes for a nice backup/secondary light which supplements (or complements) a normal picatinny lamp.

      E.G. Two lamps: One lamp is flood, the other is for spot.

    • RSG

      Not always easy to mount lights on a shotgun.

  • DanGoodShot

    Hear the voices of the Village People in your head singin’ “It’s fun to stay at the Y. M. C. A hey.” Ya got that now? Ok good. Now change the ymca verse to “It’s great to know the M. S. R. P, Pete!” 😉

    • DW

      He did give you street price, close enough I guess.

      • Pete – TFB Writer

        I edited after the fact.

    • Pete – TFB Writer

      Updated. Found Street but not MSRP

      • DanGoodShot

        Street price, even better! Your the man Pete!

  • Haulin’ Oats

    These have been around for years, but I’m glad you now know about them.

  • Klaus Von Schmitto

    And us 20 gauge guys get nothing except sad again.

  • DW

    Title picture is a Benelli Nova, not a pending recall.

    • tazman66gt

      Glad I wasn’t the only one to notice that wasn’t a 870. I guess they are to busy sucking Springfield Armory’s ass to notice the details.

  • RSG

    Steiner makes good kit. Should integrate a green laser into the same module. For a shotgun, that would be awesome.

  • Jeff Smith

    That looks way too far forward for use comfortably.

  • Swarf

    “Street price hovers around $180.”

    Ha hahaha!


    • Blake

      Why exactly is that hilarious?