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FAB Defense Shock Absorbing Stock (GL-Shock)

  • FAB Defense Shock Absorbing Stock (GL-Shock)
  • FAB Defense GL-Shock
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  • GL-Shock Stock
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FAB Defense Shock Absorbing Stock (GL-Shock)

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$108.80 $79.95


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  • Unique patented “Anti-Rattle” mechanism
  • Sleek new design with no protruding parts, will not get caught on gear and webbing
  • Unique new slick and quick operated inversed positioning lever
  • Integral ribbed rubber butt pad with a non-slip design
  • Integrated quick detach sling swivel connectors on both sides
  • Watertight battery storage for two CR123A 3V lithium batteries / AA 1.5v
  • Fits both Mil-Spec and Commercial tubes


  • Material: Reinforced Polymer Body with Rubber Butt Pad
  • Finish: Black
  • Weight: 10.72 oz.
  • Width: 1.7"
  • Height: 5.1"
  • Length: 7.1"


  • Both Mil-Spec and commercial carbine tubes


Every AR-15 owner, whether they use their weapon for profession or pleasure, knows that minimizing recoil is the key to accuracy and quick follow-up shots. That's why FAB Defense has designed their Shock Absorbing Stock (GL-Shock) to soften the kick of your AR-15 platform weapon.

This revolutionary buttstock is loaded with features: a silicon-chrome alloy spring to absorb shock, ribbed rubber butt pad, and a proprietary anti-rattle device. The streamlined design ensures that your clothing and gear won't have any place to snag. The stock even has quick-detach sling swivel connectors on both sides! A watertight storage compartment provides a place to store two CR123A or AA batteries.

You'll be hard-pressed to find a more comfortable and functional stock for your AR-15!

GL-Shock from The Mako Group/FAB Defense
  • GL-Shock from ...
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  1. Really good stuff! 4 Star Review

    Posted by on 30th Jun 2017

    I bought this to take the edge off a 458 SOCOM build, and it does the job. The stock material is fantastically durable, looks good, and will look good after plenty of wear (I have the non-shock version on my rifle and it still looks new).

    I think it's a good looking stock and easy to activate the adjustment mechanism with one hand.

    The two call-outs I have are...
    1) Despite having an anti-rattle mechanism, there is still some play between the stock and the buffer tube (Spikes Tactical mil-spec tube). It's not horrible, but it bugs me so I will probably develop a solution for it at some point, but it doesn't make much in the way of noise,and it does not functionally create any problems. As I understand, it's still better than a lot of other adjustable stocks.

    2) This is not necessarily the stock... Now that I have installed it, it doesn't want to come off the buffer tube. I can't get the position pin to pull out enough to slide off the tube (at least by just using my fingers, I have to get in there and pry it into position for removal). But it installed without a hitch, it adjusts perfectly smoothly, but it just takes a little extra work to remove (this is not a problem on the other (non-shock) install I have). It may not be the stock, but rather the buffer tube.

    I love this stock.

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