SIG SAUER M400-SDI X 5.56 NATO 11.5in 30rd Semi-Auto Pistol (PM400-SDI-11B-BLK)
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Sig Sauer
Overview
The SIG SAUER M400-SDI X 5.56 NATO 11.5in 30rd Semi-Auto Pistol (PM400-SDI-11B-BLK) is a complete rifle. Compare prices from multiple merchants and find the best deal.
Specifications
SIG SAUER M400-SDI X 5.56 NATO 11.5in 30rd Semi-Auto Pistol (PM400-SDI-11B-BLK)
Available Merchants(6)
Prices checked
Price Alert
Build history on GunPartPicker
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 4 of the 6 retailers we track have it in stock. Prices barely moved in October 2026, holding around $1,499.99, with no real sale all month. Buying today, the lowest price is $1,499.99 at Palmetto State Armory, which matches the best price we saw in October.
Prices checked · refreshed daily across 37 retailers
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