Strike Industries Viper Modular Fixed Stock

SKU# 2644 | by Strike Industries
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Manufacturer Description

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.


  • 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.


  • Weight: 12.8 oz
  • Materials: Polymer with steel mounting hardware
  • Finish: Black and FDE high strength polymer

Package includes:

  • 1x Viper Modular Fixed Stock
  • 3x Adjustment Shims (0.75")

Note: A standard mil-spec castle nut, buffer tube and endplate must be used for proper installation of the Viper Modular Fixed Stock. Compatible with A5 Carbine Receiver Extensions.

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