SIG SAUER M400 SENTRY 5.56MM 16″ ROMEO5

SIG SAUER M400 SENTRY 5.56 Rifle with ROMEO5 Red Dot

The SIG SAUER M400 SENTRY 5.56 Rifle with a factory-installed ROMEO5 red dot sight is a high-performance, precision AR-style firearm engineered for tactical use, home defense, and competitive sport shooting. Built by the trusted name in firearms, Sig Sauer, this semi-automatic rifle is chambered in .223 REM/5.56 NATO, delivering exceptional accuracy and dependability in every round.

Built for Accuracy, Reliability & Control

The SIG SAUER M400 SENTRY 5.56 Rifle features a 16-inch barrel with a 1-in-7″ twist rate for superior bullet stabilization, making it ideal for medium to long-range accuracy. Coupled with its ROMEO5 red dot optic, you’ll get fast target acquisition whether you’re on the range or in high-stress defense scenarios.

Durable Construction for Demanding Environments

Crafted with a durable aluminum receiver and high-quality components, the M400 SENTRY is rugged and ready for intensive use. Its semi-auto action ensures efficient cycling with every shot. Whether you’re shooting for precision or protecting your home, this rifle delivers uncompromising performance.

Key Features of the SIG SAUER M400 SENTRY 5.56 Rifle

• Caliber/Gauge: .223 REM / 5.56 NATO
• Barrel Length: 16 inches – optimal for balance and maneuverability
• Twist Rate: 1-in-7″ – for enhanced bullet accuracy
• Action: Semi-Automatic
• Magazine Included: (1) 30-round magazine
• Optic: ROMEO5 Red Dot Sight pre-mounted for precision targeting
• Receiver: Durable aluminum construction
• Model: SIG M400 SENTRY – AR-platform
• UPC: 798681716128
• Manufacturer Part Number: RM400-SDI-16B-R5FX

Why Choose the SIG SAUER M400 SENTRY for Your Arsenal?

This SIG SAUER M400 SENTRY 5.56 Rifle offers shooters a premium home defense and range solution with unmatched reliability, intuitive handling, and pinpoint accuracy. The included ROMEO5 red dot sight further enhances target engagement in low-light or fast-paced environments, making this a versatile tactical option.

Frequently Asked Questions (FAQs)

Q1: Is the ROMEO5 red dot sight removable?

Yes, the ROMEO5 red dot is mounted on a standard Picatinny rail and can be easily removed or upgraded if desired.

Q2: Can this rifle shoot both .223 Remington and 5.56 NATO?

Yes, the M400 SENTRY is chambered for both .223 REM and 5.56 NATO, giving you flexibility in ammunition choice.

Q3: Is this rifle compliant in all 50 states?

Due to its 30-round capacity and AR-platform design, this rifle may not be compliant in some restrictive states like California or New York. Be sure to check your local laws before purchasing.

Q4: What is the twist rate of the barrel?

The barrel features a 1-in-7″ twist rate, ideal for stabilizing heavier bullets and enhancing long-range performance.

Q5: What type of action does the rifle use?

This rifle is a semi-automatic, making it a reliable choice for defense and sport shooting scenarios.