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
Sig Sauer M400 SDI XSERIES, Semi-automatic Rifle, AR, 223 Remington/556NATO, 16" Carbon Steel Barrel, Anodized Finish, Black, Magpul SL Stock, SIG Flatblade Match Trigger Low Profile Gas Block With Mid-Length System, 30 Rounds, 1 Magazine RM400-SDI-16B-P
Specifications
| Model | M400 |
| Caliber | 223 Remington |
| Brand | Sig Sauer |
| Accessories | 1 Magazine |
| Color | Black |
| Manufacturer Part # | RM400-SDI-16B-P |
| Subcategory | Modern Sporting Rifles |
| Action | Semi-Automatic |
| Capacity | 30 Rounds |
| Grips | Polymer |
| Stock | Magpul MOE SL |
| TYPE | AR |
| Finish | Anodized |
| Description | M-LOK |
| Barrel Length | 16" |