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Mfg Item #: RM400-SDI-16B-FDE
The M400-SDI X was designed to meet the highest standards of performance and reliability. From the rifle's full suite of ambidextrous controls to its proven mid-length gas system. Features fully Ambi Controls- safety, charging handle, bolt Catch & mag release; 2-Stage Matchlite Duo trigger; free floating M-LOK; mid-length direct impingement operating system and 6 position Magpul SL stock.
| Action | semi-auto |
|---|---|
| Barrel | 16" |
| Finish | Flat Dark Earth |
| Length | 36.5" |
| Sights | None |
| Caliber | 223 Rem | 5.56 NATO |
| Capacity | 30 + 1 |
| Magazine | 1 30 rd. Polymer Mag |
| Rate Of Twist | 1-in-7" |
| Stock Frame Grips | Collapsible / Folding Stock Magpul BSL Pistol Brace |
| Nfa Thread Pattern | 1/2x28 |
| Additional Feature 1 | Aluminum MLOK Handguard |
| Additional Feature 2 | Sig Flash Hider Compensator |
| Additional Feature 3 | Sig 2-Stage Matchlite Duo |