Sig Sauer M400 FORGE AR-15 rifle in Flat Dark Earth with 16-inch cold hammer forged barrel, ROMEO-MSR Gen II red dot, and free-float aluminum handguard, in store image pointed to the left

Sig Sauer M400 FORGE 5.56 NATO 16" AR-15 Rifle with ROMEO-MSR Gen II - Flat Dark Earth

Sig Sauer
SKU:
101-33218
|
UPC:
798681744190
$1,159.99
Current Stock:
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Description

   Sig Sauer M400 FORGE 5.56 NATO 16" AR-15 Rifle with ROMEO-MSR Gen II – Flat Dark Earth

The Sig Sauer M400 FORGE continues SIG SAUER's legacy of producing reliable, duty-grade firearms by combining premium components with proven AR-15 performance. Chambered in 5.56 NATO, this Flat Dark Earth model is equipped with high-end factory upgrades, making it an outstanding choice for home defense, training, competition, and recreational shooting.

The rifle is built around a durable 16-inch cold hammer forged barrel, delivering exceptional accuracy, longevity, and consistent performance under heavy use. A free-float aluminum handguard enhances rigidity while providing ample M-LOK space for lights, slings, bipods, and other accessories.

Factory-equipped with the SIG ROMEO-MSR Gen II 2 MOA Red Dot Sight, the M400 FORGE is range-ready right out of the box. Its TriggerTech 3.5-pound two-stage flat blade duty trigger offers a crisp, predictable trigger break that improves both precision shooting and rapid follow-up shots.

Additional features include an ambidextrous charging handle, adjustable stock, ergonomic polymer grip, and a durable matte Flat Dark Earth finish. Designed for dependable performance in demanding conditions, the M400 FORGE delivers the quality and refinement expected from SIG SAUER.

Key Features

  • Chambered in 5.56 NATO
  • 16-inch cold hammer forged barrel
  • Flat Dark Earth finish
  • TriggerTech 3.5 lb two-stage flat blade duty trigger
  • Factory-installed SIG ROMEO-MSR Gen II 2 MOA red dot
  • Free-float aluminum handguard
  • Ambidextrous charging handle
  • Adjustable stock
  • 30-round magazine included
  • Built for duty, defense, competition, and recreational shooting

Specifications

Manufacturer Sig Sauer
Model M400 FORGE
Manufacturer Part Number RM400-556N-16B-FORGE-FDE
UPC 798681744190
Caliber 5.56 NATO
Action Semi-Automatic
Platform AR-15
Barrel Length 16"
Barrel Type Cold Hammer Forged
Capacity 30 Rounds
Trigger TriggerTech 3.5 lb Two-Stage Flat Blade
Optic SIG ROMEO-MSR Gen II 2 MOA Red Dot
Handguard Free-Float Aluminum
Charging Handle Ambidextrous
Stock Adjustable
Grip Polymer
Finish Matte Flat Dark Earth

Why Choose the Sig Sauer M400 FORGE?

The Sig Sauer M400 FORGE is a premium AR-15 that comes equipped with upgrades shooters typically add later. Featuring a cold hammer forged barrel, TriggerTech duty trigger, factory-installed ROMEO-MSR Gen II optic, ambidextrous controls, and a durable Flat Dark Earth finish, it offers exceptional reliability, accuracy, and value for anyone seeking a high-performance modern sporting rifle.