Firearms AlmanacEst. 2026

SIG Sauer Pistols

SIG Sauer M400 Pistol

Specs, variants & prices

SIG Sauer currently makes 2 versions of the M400 Pistol pistol, both chambered in 5.56 NATO. Each has a 11.5" barrel. SIG Sauer's suggested retail prices run from $999.99 to $1,499.99, and stores set their own prices from there. The table below lines up every version so you can compare them at a glance.

See prices for every version 🔔 Deal alert for the M400 Pistol

What versions of the SIG Sauer M400 Pistol are there?

2 current versions. Specs and measurements are SIG Sauer's own.

  • M400-FORGE PISTOL

    1x 30rd magazines

    See prices
    Model / part #
    PM400-556N-11B-FORGE
    Caliber
    5.56 NATO
    Capacity
    30
    Barrel
    11.5"
    Overall length
    29.8"
    Weight
    6.2 lb
    Finish
    Black Anodized
    MSRP
    $999.99

  • M400-SDI X PISTOL

    1x 30rd magazines

    See prices
    Model / part #
    PM400-SDI-11B-BLK
    Caliber
    5.56 NATO
    Capacity
    30
    Barrel
    11.5"
    Overall length
    30.1"
    Weight
    5.8 lb
    Finish
    Hard Coat Anodized
    MSRP
    $1,499.99

What calibers does the M400 Pistol come in?

Both versions are chambered in 5.56 NATO.

How much does a SIG Sauer M400 Pistol cost?

SIG Sauer's suggested retail prices run from $999.99 to $1,499.99, depending on the version. Tap “See prices” next to any version to see what retailers are asking.

Can you buy one in California or Massachusetts?

California and Massachusetts each keep their own list of handguns approved for sale, and a gun has to be on it before a dealer there can sell it to you. State rules change, so check our California and Massachusetts pages before you buy.

What's the latest on the M400 Pistol?

Nothing new on the M400 Pistol lately.

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SIG Sauer's official M400 Pistol page ↗Shop SIG Sauer deals →All SIG Sauer models

Specs from SIG Sauer, checked October 22, 2026 (source). Spot a mistake? Let us know and we'll fix it. SIG Sauer is a trademark of its owner, listed for identification only. Firearms Almanac isn't affiliated with SIG Sauer.