Description
The Sig Sauer M400 SDI is a semi-automatic rifle configured with a 16-inch threaded barrel, M-LOK handguard, and six-position Magpul stock. Its Moss Green Cerakote finish, flat trigger, and included 30-round polymer magazine define the listed configuration.
The rifle uses a mid-length direct-impingement operating system and includes an ambidextrous manual safety. The source data lists the chambering inconsistently, so it is omitted from this description pending review.
Key Specifications
- A 16-inch threaded barrel provides the listed barrel length and threaded configuration.
- The semi-automatic action supports the rifle’s specified operating format.
- A mid-length direct-impingement operating system defines how the rifle cycles.
- The M-LOK and Picatinny accessory rail supports the listed accessory interface.
- A six-position Magpul MOE-SL stock allows adjustment across six positions.
- The SIG 2-Stage Matchlite Duo flat trigger provides the specified two-stage trigger design.
- An ambidextrous manual safety accommodates operation from either side.
- One 30-round polymer magazine is included with the rifle.
- The Moss Green Cerakote finish covers the listed receiver and handguard finish.
- At 7 pounds, the listed rifle weight supports a defined carry weight for range use.
This configuration suits range users looking for a modern sporting rifle with adjustable stock positioning, modular accessory mounting, and a threaded barrel. The combination of a two-stage trigger, ambidextrous safety, and M-LOK handguard gives the M400 SDI a clearly specified feature set without unnecessary extras.
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