Strike Industries Gridlock Handguard Full Assemble

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  • Rail Height: 61.65mm
  • Rail Width: 46.2mm
  • Rail Length: 11"/ 15"/ 17"
  • Internal diameter: 1.6 inches
  • Quick Rail Detachment
  • Detail
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    The SI Gridlock Handguard Full Assemble features full modular colorways with integrated backup sights, built in Picatinny mounts, and a spring loaded detach lever for the QUICKEST rail removal process ever. This Gridlock is constructed of a precision CNC Milled from durable 6061 Aluminum and given a semi-matte finish for the smoothest grip. The QD Locking Lever allows for rapid detachment of the rail housing from the barrel nut. The barrel nut, using 7250 Anodized Aluminum creates a lightweight solution that is exclusive to the GRIDLOK system. By combining the versatility of MLOK with the profile of a traditional picatinny, this rail attachment system allows for endless customization for accessory attachment and configurations. With a larger Internal diameter of 1.6" the GRIDLOK is built to accommodate mid to large compensators, namely the Strike Oppressor.


    • 11": 15.38 oz
    • 15": 17.96 oz.
    • 17": 19.33 oz.

    Product Specification:

    • Height of rail: 61.65mm
    • Width of rail: 46.2mm
    • Length of rail: 11"/ 15"/ 17"
    • Internal diameter: 1.6 inches
    • Max Torque Value - Barrel Nut - 30-50 ft/lbs (40.5 NM)

    Product Features:

    • Quick rail detach, removing the rail housing from the barrel nut/ The QD Locking Lever features a tightness adjustment
    • Barrel nut shroud and front rail (top & bottom) is modular and customizable/ New barrel nut material using 7250 Anodized aluminum vs. traditional steel.
    • Integrated font sight/ Front top rail can be removed to accommodate A2 sight set-up
    • RailLok (TM) can accommodate picatinny 1913 and MLOK accessories/ Integrated QD mount/ alignment set screws to center the rail on to the firearm platform
    • Internal rail clearance is at 40.5mm - it will accommodate the Oppressor's Blast Shield

    Package Includes:

    • 1 Handguard Main Housing
    • 1 Top Rail
    • 1 Bottom Rail
    • 1 Barrel Nut Shroud
    • 1 Set Of Tools
    • 1 Enhanced Barrel Nut
    • 1 Barrel Nut Tools
    • 1 Warning card

    COMPATIBILITY: Mil-Spec M4 upper receiver.


    • Most piston gas blocks
    • Some billet/side charging uppers

    Torque: 30-50 ft/lbs (47.45-67.79 nM) for the barrel nut.

    It is NOT RECOMMEND to adjust the locking tightness when you mount it on barrel nut.


    • Before every use, always check proper function of your QD mount and any wear and tear from use
    • Always have your weapon in the SAFE position when not being fired
    • Always follow all firearms safety rules and never point your weapon at anything you are not willing to destroy

    CALIFORNIA PROPOSITION 65 WARNING:This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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    WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to

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