SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Flat Dark Earth Semi-Auto Rifle (RM400-SDI-16B-FDE)
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Sig Sauer
Overview
The SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Flat Dark Earth Semi-Auto Rifle (RM400-SDI-16B-FDE) is a complete rifle. Compare prices from multiple merchants and find the best deal.
Specifications
SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Flat Dark Earth Semi-Auto Rifle (RM400-SDI-16B-FDE)
Available Merchants(7)
Prices checked
Price Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Flat Dark Earth Semi-Auto Rifle (RM400-SDI-16B-FDE) to a build in April 2026.
It was out of stock everywhere we track for all of September 2026, and today 5 of the 7 retailers we track have it in stock. Buying today, the lowest price is $1,599.99 at Palmetto State Armory, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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