The New SIG Sauer SIG M400

Published on April 30, 2011
Duration: 1:09

Dave Grimshaw, Sig Sauer's Rifle Product Manager, introduces the new SIG M400 rifle at the NRA show. This AR platform rifle features a direct impingement system, distinguishing it from the SIG 516's gas piston. Key features include M4-style furniture, an A2 pistol grip, a removable 0-600 meter rear sight, an adjustable front sight, and a 1-in-7 twist, chrome-lined barrel.

Quick Summary

The SIG M400 is an AR platform rifle featuring a direct impingement operating system, unlike the gas piston system found in the SIG 516. It incorporates M4-type handguards and stock, an A2 pistol grip, and a 1-in-7 twist, chrome-lined barrel with a phosphate finish.

Chapters

  1. 00:06Introduction: SIG M400 at NRA Show
  2. 00:13SIG M400 Overview: Direct Impingement vs. Gas Piston
  3. 00:26Key Features: Ambidextrous Controls, M4 Furniture
  4. 00:45Barrel and Sights Specifications

Frequently Asked Questions

What type of operating system does the SIG M400 use?

The SIG M400 utilizes a direct impingement operating system. This system routes gas directly from the barrel into a gas tube to cycle the action, distinguishing it from gas piston systems.

What are the key furniture features of the SIG M400?

The SIG M400 is equipped with M4-type handguards and an M4-type stock. It also features an A2-type pistol grip, providing a familiar and functional interface for the shooter.

What are the barrel specifications for the SIG M400?

The SIG M400 features a barrel with a 1 in 7 twist rate, which is effective for stabilizing a variety of bullet weights. The barrel is also chrome-lined with a chrome bore and has a phosphate finish for enhanced durability and corrosion resistance.

How does the SIG M400 compare to the SIG 516?

The SIG M400 is an AR platform rifle with a direct impingement system, whereas the SIG 516 uses a gas piston system. However, the SIG M400 shares many features with the SIG 516, including ambidextrous controls.

Related News

All News →

More Tactical & Gear Videos You Might Like

More from NRApubs

View all →