About the Sig Sauer M400 FORGE
The SIG M400 is SIG Sauer's direct-impingement AR-15 platform, built with a free-floating M-LOK handguard, SIG Matchlite Duo or TriggerTech trigger and ambidextrous controls. It is a dependable 5.56 NATO rifle for home defense, training and range use.
Key Features
- 11.5in cold hammer forged barrel, carbine-length DI
- A2 birdcage flash hider
- Ambidextrous charging handle
- ROMEO-MSR Gen II included
Specifications
| Caliber | 5.56 NATO |
| Barrel Length | 11.5" |
| Twist Rate | 1:7 |
| Capacity | 30+1 |
| Magazines | (1) 30-round magazine |
| Finish | Black Anodized |
| Stock / Brace | Magpul BSL Pistol Stabilizing Brace |
| Handguard | 10in M-LOK, full-length Picatinny rail |
| Optic | ROMEO-MSR |
| Trigger | TriggerTech 3.5 lb 2-stage flat blade |
| Action | Semi-Auto |
| Overall Length | 29.8 in (27.8 in collapsed) |
| Weight | 6.2 lb |
| Part Number | PM400-556N-11B-FORGE |
FAQ
Does it come with an optic?
Yes. It ships with a SIG ROMEO-MSR installed.
What magazines come with it?
It ships with (1) 30-round magazine.
Where can I buy it?
Order online and ship to your local FFL, or visit Black Bayou Armory in Benton, LA.






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