Sig Sauer M400 SDI XSeries Flat Dark Earth 5.56 / .223 Rem 16" Barrel 30-Rounds
$1386.99
at Etowah Firearms · checked just now
8 retailers · $1386.99 to $1640.99 in stock
This listing: GrabAGun $1599.99
Offers
8 retailers list SIG M400 SDI 5.56 NATO 16" AR Rifle FDE MLOK; 8 in stock, in-stock prices run $1386.99 to $1640.99.
Price history
Lowest price across retailers each day.
- Lowest seen
- $1386.99
- Typical price
- $1439.49
- Tracked since
- Apr 10, 2026
Today's best price matches the 196-day low and is 4% below typical.