Antreg® ARS M4s® 2.0 Strong 10.5" AR-15 Semi-Automatic Rifle

The Antreg ARS M4s 2.0 Strong 10.5" is a compact semi-automatic AR-15 platform rifle with a piston operating system and a three-position adjustable gas regulator. Its 10.5" Lothar Walther barrel features the more robust Strong profile for increased rigidity and thermal capacity, while the free-float M-LOK245 handguard provides a compact platform for mounting accessories. Fully ambidextrous controls and an adjustable Magpul CTR stock support efficient handling by right- and left-handed shooters.

Piston Operating System with Adjustable Gas Regulator

The ARS M4s uses a piston operating system rather than directing combustion gases into the bolt carrier group as in a conventional direct impingement system. This helps reduce carbon fouling inside the receiver and bolt carrier assembly. The charging handle is designed to redirect escaping gases away from the shooter's face, while the three-position gas regulator allows the operating system to be configured for standard use, adverse conditions, or suppressed fire.

The gas block and receiver extension are also designed to allow the rifle to be fired immediately after emerging from water.

Lothar Walther Strong-Profile Barrel

The 10.5" (266.7 mm) Lothar Walther barrel uses Antreg's more robust Strong profile, which provides greater rigidity and thermal capacity than the Light Weight version. Both the bore and exterior are nitrided to improve resistance to wear, corrosion, and environmental exposure.

A 1:7" twist rate supports the stabilization of heavier projectiles commonly used in .223 Rem and 5.56 NATO ammunition.

Free-Float M-LOK245 Handguard

The free-float M-LOK245 handguard provides mounting space for compatible lights, grips, sling attachments, and other accessories without applying direct pressure to the barrel. The continuous Picatinny top rail accommodates optics, backup sights, and additional rail-mounted equipment.

Fully Ambidextrous Controls

The charging handle, safety selector, magazine release, and bolt catch can be operated from either side of the rifle. This layout supports both right- and left-handed shooters and improves weapon handling during shoulder transitions or when working around cover.

The safety selector can be configured for either a short 60° throw or a traditional 90° throw, depending on the shooter's preference.

Durable Construction and Magpul Furniture

The upper and lower receivers are manufactured from AW7075-T6 aluminum alloy and protected by an anodized finish. The rifle is equipped with an adjustable Magpul CTR stock with a friction-lock system and a Magpul MOE pistol grip featuring a textured surface and internal storage compartment.

The compact 10.5" configuration supports maneuverability in confined spaces and around obstacles while the Strong-profile barrel provides additional rigidity and heat capacity.

Practical Maintenance Features

The three-position gas regulator can be adjusted with the tip of a cartridge, eliminating the need for a dedicated adjustment tool. The handguard can also be removed without specialized tools for easier maintenance access. The ambidextrous charging handle is shaped for reliable operation while wearing gloves, and the magazine release is protected against accidental activation.

Benefits You Need to Know:

• compact semi-automatic AR-15 platform rifle
• piston operating system
• three-position adjustable gas regulator
• reduced carbon fouling inside the receiver and bolt carrier assembly
• charging handle designed to redirect gas away from the shooter's face
• can be fired immediately after emerging from water
• 10.5" (266.7 mm) Lothar Walther barrel
• robust Strong barrel profile
• 1:7" twist rate
• nitrided bore and exterior barrel surfaces
• free-float M-LOK245 handguard
• continuous Picatinny top rail
• fully ambidextrous controls
• configurable 60° or 90° safety selector
• AW7075-T6 upper and lower receivers
• Magpul CTR adjustable stock with friction lock
• Magpul MOE pistol grip with internal storage