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Strike Industries Viper Modular Fixed Stock for AR15 Rifles (Color: Flat Dark Earth)

ID: 82688 (Stock-SI-VIPER-MFS-FDE)
Strike Industries708747546903SI-strike-MFS-FDE82688
5.0 stars, based on 1 reviews
Strike Industries Viper Modular Fixed Stock for AR15 Rifles (Color: Flat Dark Earth)
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Strike Industries


Non-Export ItemShips Inside USA Only
This is an export-restricted item and can only be shipped within the United States. No international delivery for these items.
Color Options:


  • Customizable Length of Pull (12" to 14.25")
  • Modular assembly
  • Snap Hook attachment and sling loop
  • For mil-spec carbine or our Advanced Receiver Extension 7-Position buffer tubes only
  • Required standard castle nut and end plate
  • Polymer construction with steel mounting hardware

Color: Flat Dark Earth

The Strike Industries Modular Fixed Stock combines the versatility and adjustability of a collapsible stock with the strength, ergonomics, and solid fit of a fixed stock. The SI MFS uses a standard carbine length receiver extension and is adjusted using the included shim set to change length of pull.

Compatibility:Milspec AR15 buffer tubes
Material: Injection molded polymer

Manufacturer: Strike Industries

1 Customer Review

(Write a review)

by Hunter P. on 09/30/2019
"Very Well built. Fits my M4 perfectly (EMG/Falkor Defense/APS Blitz SBR.). 5/5

-Kind of a hassle to take apart to insert battery.
-ONLY use a stick battery. I can use a 11.1V 1250mAh Easily. You can try to use other styles but good luck.
-You have to have a phillips screwdriver and a hex wrench set at all times to take apart and reassemble the stock.
-Don't worry about your buffer tube compatibility too much; unless it's plastic or polymer. (6 pin/position buffer tubes work just fine.)
-Not a lot of battery space, but if you condense the wires you'll be just fine.
-No way to have a sling mount end-plate with this stock. This stock WILL cover the end plate. (Don't have an endplate b/c of my wiring setup.) Still works without an endplate, but it's best you have one on your gun.
-Don't bother having less than "2 gaps," Otherwise it gets kinda tricky to put a battery in.

Pro's/Favorite Features.
-Not bad for 40$, definitely a better fixed stock because if its light weight.
-Easy assembly; it's just different than most stocks I've ever used.
-Doesn't fumble around or shake. (Unless your buffer tube is too loose.)
-Customizable. (Butt-pad and a monopod are available, I just don't think I'll ever buy them.)
-Sits flush with MOST riffles, but some may not sit so flush.
-Adjustable... Somewhat, But I'd only recommend this stock for people who are taller, or have longer arms.
-Works well for a non-DMR or sniper setup.
-A good test stock to see if you want to utilize a fixed stock instead of an adjustable stock. (Me personally, I'm a taller guy so I don't collapse my stocks anyways, so It's objectively better in my opinion.)\
-Not too bulky, unlike crane stocks.

Other Notes:
-"Adjustable Length" refers to the fact the "rings" can be taken off and on to add or subtract length. Kinda like suppressor segments on some suppressors.
-Bottom base screw acts a sling mount, but my sling mount doesn't fit in perfectly, but A for effort. I'd look at getting a smaller sling mount if you want to use it. ( I personally run a one-point sling. IDK about other slings' compatibility.)

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