Sig Sauer M400 SDI X Series, 5.56mm Rifle, Black (RM400-SDI-16B-P)

Sig Sauer-The M400 SDI X Series is the out of the box performance solution. The X Series features a 16″ chrome molly barrel with a free-floating M-LOK handguard, SIG Flatblade Match Trigger, ambidextrous bolt catch and release, Magpul SL stock, and mid-length gas system.

• Ambidextrous Bolt Catch and Release
• Low Profile Gas Block with Mid-Length System
• SIG Flatblade Match Trigger
• Hybrid Compensator/Flash Hider
• Magpul SL Stock