EraThr3 M-LOK Handguards

    Rainier Arms is now carrying the new EraThr3 M-LOK AR-15 rails. They’re available in 10″, 12″ and 14″ and are made out of 6061 hardcoat anodized aluminum with a black Cerakote finish. It has 1913 Picatinny rail sections on top of the rail at the front and back and has M-LOK slots positioned at 3, 6, & 9 o’clock positions. The 10″ rail currently goes for $255.55, the 12″ rail is $265.05 and the 14″ rail is $274.55. Check them out at


    The EraThr3 Low-Pro M-LOK Handguard is a sleek, free-floating alternative for the AR-15 weapon system. Designed with versatility in mind, M-LOK slots are positioned at 3, 6, & 9 o’clock positions, leaving the door wide open for hanging everything under the sun off of your rifle. Direct-mount M-LOK accessories and/or M-LOK 1913 Picatinny rail sections are easily installed for the mounting of tactical lights, slings, grips, and/or any other items one may deem necessary.

    M-LOK is a modular locking accessory mounting system that is a direct attachment method for hard mounting accessories to a negative space mounting point. Designed by Magpul Industries as an evolution of the MOE slot system used since 2007, the M-LOK system is being released as a free licensed platform to allow greater compatibility of accessories between all manufactures.


    6061 Hardcoat Anodized Aluminum
    Black Cerakote Finish
    Steel Barrel Nut w/ Torx Fasteners
    M-LOK Accessory Slots

    Length: 10.5”
    Weight: N/A

    Length: 12”
    Weight: N/A

    Length: 13.5”
    Weight: N/A
    Recommended Tools & Shop Supplies:

    Gun Vise and Upper Receiver Block
    1 11/16” End Wrench
    Torque Wrench & Driver Set
    Anti-Seize & Gun Oil Blue Loctite or Equivalent

    Ray I.

    Long time gun enthusiast, Sci-Fi nerd, Whiskey drinker, online marketer and blogger. My daily firearms musings can be found over at my gun blog and Instagram.

    Shoot me an email at [email protected]