Currently Unavailable
We don’t know when or if this item will be back in stock.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