SIG Sauer RM400SDI16BP M400 X-Series 16" 30+1, Black, Magpul SL-K Stock, OEM Polymer Grip, Flat Match Trigger
Ships to a dealer, not to you
This is a serialized firearm.
Sig Sauer
Overview
The SIG Sauer RM400SDI16BP M400 X-Series 16" 30+1, Black, Magpul SL-K Stock, OEM Polymer Grip, Flat Match Trigger is a complete rifle. Compare prices from multiple merchants and find the best deal.
Specifications
SIG Sauer RM400SDI16BP M400 X-Series 16" 30+1, Black, Magpul SL-K Stock, OEM Polymer Grip, Flat Match Trigger
August 2026 on GunPartPicker
SIG Sauer RM400SDI16BP M400 X-Series 16" 30+1, Black, Magpul SL-K Stock, OEM Polymer Grip, Flat Match Trigger was the sixth most added complete rifle on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since May 2026. All time, it is the third most added complete rifle on the site.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 3 of the 5 retailers we track have it in stock. Prices barely moved in August 2026, holding around $1,499.99, so there haven't been real sales lately. Buying today, the lowest price is $1,266.05 at BattleHawk Armory, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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