• Full modular colorways with integrated backup sights
  • Spring-loaded detach lever for quick removal
  • Improved barrel nut material versus traditional steel
  • Customizable barrel nut shroud and front top and bottom rail
  • Front top rail can be removed to accommodate A2 sights set-up
  • Integrated QD mount
  • RailLok accommodates both Picatinny and M-LOK accessories
  • The larger internal diameter allows the use of mid-large muzzle devices
  • Barrel nut shroud, front top, and bottom rail is available in Black, Flat Dark Earth, Red, and Titan Gold!


  • Material:
    • Handguard Housing 6061-T6 Aluminum
    • Barrel Nut Shroud, and Top & Bottom Rail: 6061-T6 Aluminum
    • Barrel Nut: 7250 Anodized Aluminum
  • Finish: Anodized
  • Weight (Including Barrel Nut and Hardware):
    • 8.5-Inch: 13.76 oz.
    • 11-Inch: 15.38 oz
    • 15-Inch: 17.96 oz.
    • 17-Inch: 19.33 oz.
  • Inside Diameter: 1.58"
  • Height: 2.42"
  • Width: 1.84"


  • Mil-Spec AR-15 Upper Receivers

**Not compatible with most gas piston systems

**Make sure the locking lever is perpendicular with the rail when attaching

**The two locking screws at the base can only be easily adjusted when the base is not mounted on the barrel nut. It is not recommended to adjust the locking tightness when you mount it on the barrel nut


  • 1x Strike Industries GRIDLOK Handguard Housing
  • 1x Strike Industries GRIDLOK Top Rail
  • 1x Strike Industries GRIDLOK Bottom Rail
  • 1x Strike Industries GRIDLOK Barrel Nut Shroud
  • 1x Enhanced Barrel Nut
  • 1x Allen Wrench
  • 2x Locking Screws
  • 16x Mounting Screws
  • 1x Magnetic Tool
  • 1x Barrel Nut Wrench
  • 1x Shim Kit


Strike Industries GRIDLOK Handguard



For many shooters, the change to a free-floating handguard is hard to make. You like the idea, but when some assembly is required, you don't want the hassle. Sometimes a simple M-LOK handguard almost requires an engineering degree to attach to your gun. However, that is not the case with the Strike Industries GRIDLOK handguard. You will literally attach this rail to your weapon in seconds.

Time Is On Your Side

Strike Industries has built its empire around the drive for innovation. SI doesn't just make gun parts. The company focuses on designing solutions for problems. Solutions for SI result in new products. SI invested a full two years of research and development in their Strike Industries GRIDLOK handguard. In both its appearance and application, the GRIDLOK takes the ordinary M-LOK handguard to extremes never before seen. You will see M-LOK slots surrounding the GRIDLOK. Additionally, SI includes Picatinny rail sections both in the front and rear with a little bonus. That little plus is an integrated flip-up front sight.

The Hard Part's Over

Other than attaching an ordinary free-floating rail, taking it off is the next worst thing. Even though you hate to think about it, sooner or later you're going to have to remove any rail. If nothing else there's routine maintenance and cleaning. Perhaps you're running a specific adjustable gas block. In your world, there will never be another gas block for you. But, you can't adjust it with the handguard in place. With the Strike Industries GRIDLOK handguard, that's no longer a problem. SI designed a proprietary barrel nut along with a quick-release lever for the GRIDLOK. The unique design makes this M-LOK handguard the quickest to install or remove in existence.

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Reviews (5)

  • Strike Industries Gridlock M-Lok Handguard

    Posted by James Webb on 20th Mar 2021

    It was easy to install and comes with everything you need to install it. I like the quick detach system, it makes it easy to make gas block adjustments, cleaning, and inspection of the gas system. My son liked it and is going to purchase one.

  • Another Seller SI Product

    Posted by Grunt241 on 9th Mar 2021

    Couldn't wait to get this on my fun gun to replace the two piece plastic handguard. Installation was effortless. The shims they provided helped center the gas tube slot on the barrel nut perfectly when tightened to 40 ft/lbs (installation called for 30-50 ft/lbs so I opted for right in the middle). SI is the leader in innovation when it comes to firearm products. Their parts are as aesthetically pleasing as they are functional. Props to Wing Tactical for their lightning fast shipping. Other dealers state 4-7 days to get your orders out the door but these guys get it out same day if you order before 1pm Pacific time and next day for after. They are my go to dealer for all things pew pew.

  • Wow!

    Posted by Joey Spinks on 9th Jul 2020

    This rail system is what I was looking for. Great product.

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