Sig Sauer Add to Cart SIG SAUER M400 X SERIES PSTL 5.56 11.5" BLK BSL BRACE 1-30RD MAG MSRP: $1,649.99 Was: Now: $1,499.99 Ambi Bolt Catch/Release Safety Selector Charging Handle and Mag Catch - Low-Profile Gas Block with C…