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  1. Quick and easy to install
    Got it in grey and love it

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  2. looks sick
    Fits great and looks cool . Will buy again

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  3. Typical Magpul Quality
    I've never had a bad experience with anything Magpul when it comes to stocks and this is no different. Excellent hardware and a good price from TNA.

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Magpul MAG400 MOE Carbine Stock (Mil-Spec)

In stock
From CA$68.17

The MOE (Magpul Original Equipment) Stock is a drop-in replacement buttstock for AR-15/M16 carbines using mil-spec sized receiver extension tubes.

Designed for light, fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation.

The Mil-Spec Model includes a standard 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.


  • Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, LMT, Ruger, S&W, SIG, and others (please see the note below)
  • Sloping cheek weld combines a slim profile with user comfort
  • Shielded release latch prevents snagging and accidental operation
  • Premium chrome-silicon lock spring provides positive locking and long service life
  • Side mounting slots accept optional cheek risers for NON AR-15/M4 applications
  • Removable 0.30"" Rubber Butt-Pad offers an anti-slip surface and increases impact protection
  • Compatible with Magpul ASAP, ASAP QD, and other receiver-mount sling attachments
  • Made in U.S.A.

Sling Mounts

  • Rear/Bottom - 1.25" sling loops
  • Toe - Lanyard hole for custom para-cord rigs


  • MOE Carbine Stock, Mil-Spec
  • Weight: 8.0 oz.
  • Length, max: 6.9 in.
  • LOP Adjustment Range: 3.3 in.
  • LOP, M4 Collapsed: ~10.5 in.
  • LOP, M4 Extended: ~13.8 in.

Fine Print

  • * Specifications based on standard-length (flat-back) M4 Carbine receiver extension and may vary depending on tube manufacturer."

    You get:

    • (1) Buttstock of the chosen colour

      Compatible with:

      • Mil-spec buffer tubes

      Installation Difficulty: 

      Tools required: none

      Installation notes: none

      Model numbers:

      • MAG400-BLK - Black
      • MAG400-FDE - Flat Dark Earth
      • MAG400-GRY - Stealth Gray
      • MAG400-ODG - Olive Drab Green