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.
| Series | SDI-X |
| Model | M400 |
| Caliber | 5.56 NATO |
| Barrel Length Range | 16" to 16.99" |
| Gun Platform | AR-Style |
| Operating System | Direct Impingement |
| Stock Finish Group | Black |
| Capacity | 30+1 |
| Stock Material | Synthetic |
| Action | Semi-Auto |
| OAL | 33.25' - 36.50" |
| Hand | Ambidextrous |
| Sights | None |
| Barrel Finish | Black |
| Barrel Material | Chrome Moly Steel |
| Muzzle | Sig Flash Hider-Compensator |
| Twist | 1:7" |
| Receiver Description | Picatinny Rail |
| Magazine Type | AR-15 |
| Grips | Reduced Angle |
| Handguards | M-LOK |
| Height | 7.10" |
| Receiver Material | Aluminum |
| Safety | Lever |
| Thread Pattern | 1 / 2"x28 |
| Width | 2.75" |
| Stock Description | 6 Position Magpul SL |
| Barrel Description | Threaded |
| Barrel Length | 16" |
| Max Capacity | 30 |
| Receiver Finish | Flat Dark Earth Cerakote |
| Trigger | Sig Two-Stage Matchlite Duo |
| Weight | 7 lbs |
| Stock Finish | Black |
| Handguard Finish | Flat Dark Earth |
WARNING!⚠️
NO ON-LINE SALES! Please contact us for More Information at diego@heartoftexasarsenal.com
PURCHASE POLICIES
- All firearm sales are final. NO RETURNS.
- Return to manufacturer for warranty service.
- Actual buyer must pickup from FFL dealer who will conduct the background check.
- Firearm transfer must be the actual transferee/buyer
- All firearm purchases require valid U.S. government issued ID and related firearm paperwork.
- You must pass a criminal background check for all firearm purchases.
- Age and residency restrictions apply.
- You must meet all other requirements as set forth by applicable Federal, state and local statutes, rules and regulations for firearm purchase.
- Other terms and conditions may apply.
- HEART OF TEXAS ARSENAL reserves the right to refuse the sale of firearms to anyone for any reason.
- It is your responsibility to ensure that you are in compliance with all applicable laws, rules and regulations for the purchase of firearms.
- Please note a 10% restocking fee will be charged if your item is not picked up.
- A fee would not apply if your item is incorrect, damaged, or a failed background check occurs.
