Sig Sauer M400 FORGE AR-15 rifle chambered in 5.56 NATO 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 Red Dot

Sig Sauer
SKU:
101-33217
|
UPC:
798681744183
$1,099.99
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Description

Sig Sauer M400 FORGE 5.56 NATO 16" AR-15 Rifle with ROMEO-MSR Gen II Red Dot

The Sig Sauer M400 FORGE builds upon SIG SAUER's reputation for precision, durability, and reliability with a modern AR-15 platform designed for serious shooters. Chambered in 5.56 NATO, this rifle combines premium components, exceptional accuracy, and proven performance for home defense, range use, duty applications, and recreational shooting.

At the heart of the M400 FORGE is a 16-inch cold hammer forged barrel, engineered for outstanding barrel life, accuracy, and consistent performance under demanding conditions. Paired with a free-float aluminum handguard, the rifle delivers excellent rigidity while providing ample space for accessories and modern shooting techniques.

The factory-installed ROMEO-MSR Gen II 2 MOA Red Dot Sight offers rapid target acquisition and dependable performance straight out of the box, while the TriggerTech 3.5-pound two-stage flat blade duty trigger provides a crisp, predictable break that enhances accuracy for precision shots and fast follow-up engagements.

Additional premium features include an ambidextrous charging handle, adjustable stock, durable matte finish, and SIG Sauer's commitment to exceptional quality. Whether you're a first-time AR owner or an experienced shooter, the M400 FORGE delivers outstanding performance with premium factory upgrades already installed.

Key Features

  • Chambered in 5.56 NATO
  • 16-inch cold hammer forged barrel
  • TriggerTech 3.5 lb two-stage flat blade duty trigger
  • Factory-installed ROMEO-MSR Gen II 2 MOA red dot optic
  • Free-float aluminum handguard
  • Ambidextrous charging handle
  • Adjustable stock
  • 30-round magazine included
  • Matte gray finish
  • Built for reliability, accuracy, and long service life

Specifications

Manufacturer Sig Sauer
Model M400 FORGE
Manufacturer Part Number RM400-556N-16B-FORGE-CON
UPC 798681744183
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 Gray

Why Choose the Sig Sauer M400 FORGE?

The Sig Sauer M400 FORGE offers premium factory upgrades rarely found together in a production AR-15. From its cold hammer forged barrel and TriggerTech trigger to the included ROMEO-MSR Gen II optic and ambidextrous controls, this rifle is ready for serious use right out of the box. Whether for defensive applications, competition, or recreational shooting, the M400 FORGE delivers the reliability and precision that shooters expect from SIG SAUER.