GC_UPC Sig Sauer M400 SDI XSeries 5.56 NATO 16" 1:7" Bbl Rifle w/M-LOK Handguard & (1) 30rd Mag RM400-SDI-16B-P $1,499.99 RM400-SDI-16B-P show more like this Free Shipping over $250 Eurooptic