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

SIG Sauer M400 FORGE 5.56 NATO 16" AR-15 Rifle

The SIG Sauer M400 FORGE combines SIG's renowned reliability with premium factory-installed upgrades to deliver an AR-15 that's ready for the range, home defense, or duty use right out of the box. Built around a durable 16-inch cold hammer forged barrel, the M400 FORGE offers exceptional barrel life, consistent accuracy, and dependable performance under demanding conditions.

Unlike many factory AR-15s, the M400 FORGE arrives equipped with several premium components that shooters typically upgrade later. The standout feature is the TriggerTech 3.5-pound Two-Stage Flat Blade Duty Trigger, providing a crisp, predictable trigger pull that enhances both precision and speed.

Target acquisition is fast and intuitive thanks to the factory-installed SIG ROMEO-MSR Gen II Red Dot Sight. Featuring a crisp 2 MOA aiming dot, the included optic is ideal for close-quarters shooting, defensive applications, and general range use, allowing you to get on target quickly without additional upgrades.

Additional premium features include an ambidextrous charging handle for improved manipulation from either side of the rifle and a lightweight free-float aluminum handguard that provides ample M-LOK attachment space for lights, slings, grips, bipods, and other accessories while helping maximize barrel accuracy.

Whether you're purchasing your first AR-15 or adding another dependable rifle to your collection, the M400 FORGE delivers premium performance with the quality and engineering shooters have come to expect from SIG Sauer.

Premium Factory Features

• 16" Cold Hammer Forged barrel
• 5.56 NATO chamber
• TriggerTech 3.5 lb Two-Stage Flat Blade Duty Trigger
• Factory-installed SIG ROMEO-MSR Gen II Red Dot
• 2 MOA aiming dot
• Ambidextrous charging handle
• Free-float aluminum handguard with M-LOK attachment slots
• Adjustable stock
• 30-round magazine included (where legally permitted)
• Matte black finish

Specifications

What's Included

• SIG Sauer M400 FORGE Rifle
• SIG ROMEO-MSR Gen II 2 MOA Red Dot Sight (Factory Installed)
• One 30-round magazine (where legally permitted)
• Owner's manual

Note: The SIG ROMEO-MSR Gen II red dot is included with this rifle. Any additional accessories shown in product images, such as slings, lights, bipods, or other equipment, are for display purposes only unless specifically listed above.

Why Choose the SIG Sauer M400 FORGE?

The M400 FORGE stands apart by including upgrades that shooters often add themselves. With its cold hammer forged barrel, TriggerTech duty trigger, factory-installed ROMEO-MSR Gen II optic, ambidextrous charging handle, and free-float aluminum handguard, this rifle offers premium performance and exceptional value straight from the factory. Whether you're heading to the range, preparing a defensive rifle, or looking for a dependable all-purpose AR-15, the M400 FORGE is ready to perform from day one.