Rainier Arms MARS (Magazine Advanced Release System) for Glock

(6 reviews)
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The Rainier Arms MARS (Magazine Advanced Release System) for Glock, designed by Battleline Industries, is a drop in release which is compatible with all GEN 1 - 3 Glock pistols in calibers 9mm, 40 S&W, and .357 SIG. The MARS is made of 6061-T6 aircraft grade aluminum, with a Type III Class 2 MIL-SPEC hard coat anodizing finish and stainless steel hardware for maximum corrosion resistance and durability. The MARS control surfaces are slightly extended and feature an aggressive texture for a faster reload and positive control.
The MARS is COMPLETELY ambidextrous, giving both left and right hand shooters as well as competitors, a tactical advantage with the ability to release the magazine using the index finger from either side. The MARS is a force multiplier in a combative situation, enabling the left and right hand shooter better options to manipulate magazine changes with speed and efficiency without disturbing the proper firing grip and allowing for more accurate follow up shots.


  • 5
    Best magazine releases for gen 3 glocks

    Posted by Mike on 31st Jan 2022

    Install was easy, looks good and extremely functional. Well worth the money!!

  • 5
    Great product

    Posted by Rambull on 31st Jan 2022

    Does what it’s intended and does it great! Easy to install.

  • 5

    Posted by Unknown on 31st Jan 2022

    Great product, great service!

  • 5
    MARS-Great Piece of Device

    Posted by EG on 31st Jan 2022

    I'm a lefty and since I have my glock 17 I've been releasing the magazine with my index finger. I switched to HK USP because of the ambidextrous features, now I'm back to using my Glock. Finally, I can release it with my thumb. Thank you Rainier Arms!

  • 5
    mag release

    Posted by almario on 31st Jan 2022

    perfect ambi for glock pistol particularly those that cannot reach the factory mag release due to short thumb.

  • 5
    Quality Crafted

    Posted by Tony on 31st Jan 2022

    I recently purchased and installed the"MARS" mag release on my glock 32. My first impression was how well made this release is, and the installation was a breeze as well. I have repeatedly dropped the mag from both sides, and the function is flawless. I haven't used in the field yet, but expect good function. Overall I am very pleased with this purchase, and the transaction and fast shipping at rockyourglock.com made me a future customer. A little pricey for a mag release, but well worth it to me, and functions as it should.