SIG-Sauer M5 (XM5)

History

The MCX-SPEAR, part of SIG's MCX series, gained prominence in the US Army as a highly modular and versatile firearm since its introduction in 2015. With features such as ambidextrous controls, long Picatinny rails, and a multi-caliber capability, it addresses the needs of the modern AR-15 market. In January 2022, the MCX-SPEAR joined the MCX lineage and secured a significant role in the Next Generation Squad Weapons (NGSW) program, aiming to replace aging M4 carbines and other firearms in the Army's arsenal.

Developed under the "XM5" designation, the MCX-SPEAR outperformed competitors like Beretta and Textron, thanks to its adaptability and the use of the 6.8x51 SIG FURY cartridge. The firearm's design incorporates advanced elements, such as a lockable barrel for a suppressor, a top Picatinny rail for accessories, and a non-reciprocating left-side charging handle. Depending on the configuration, it boasts an overall length of 34.1 inches and a 13-inch barrel, with a loaded magazine weighing 8.38 lbs.

The Army's ongoing testing of the MCX-SPEAR under the "XM5" designation is expected to lead to its adoption as the "M5." The final version of the firearm will feature a Ballistic Computational Fire Control System (FCS), including integrated laser rangefinder, direct-view optics, and magnifying glass, with Vortex Optics providing the crucial "XM157 NGSW-FC" component. This development signifies a significant step toward providing soldiers with advanced tools to address emerging global threats.

Specification

Basics

Year of Service: 2025

Origins: United States

Categories: Modular Assault Carbine

Manufacturer: SIG-Sauer, Incorporated - USA

Roles

Auto function: Has mechanical features to automate the firing process.

Special Forces: The quality of this weapon has proven its value to Special Forces who need a versatile, reliable solution for the rigors of special operations.

Mute: This weapon is either inherently silent/suppressed, or can be made with special muzzle mounts, special subsonic ammo, or a combination of the two.

Notable Features

Portable: Despite its size/weight, the product can be transported on foot.

Target/area suppression: Inherent ability to provide suppress power to target/target area.

Mute function: Support for silence/suppression actions via silencers, silencers or subsonic ammunition for stealth operations.

Semi-automatic fire: Internal action allows triggering a single bullet per trigger, triggering a semi-automatic loading mechanism for continuous fire.

Automatic fire: Internal action allows multiple rounds to be triggered in quick succession with a single trigger pull.

Repeated Shots: The system has built-in automatic or pseudo-automatic function, which can achieve repeated triggering.

Ability to use rifle scopes/visual aids: Support for mounting optics (scopes) to improve accuracy in long-range shooting.

Iron Mask: Support for "iron sights" for inherent accuracy within a range.

Bipod assembly: Aiming aids can be aided by using a bipod support assembly, either as an integral part of the design or as an option.

Customizable: Design allows users to customize certain components for customization.

Adaptable: Design provides attachment points for external aftermarket hardware including laser sights, flashlights, scopes and grips.

Dimensions and Weight

Overall Length: 866mm (34.09 in)

Barrel length: 330mm (12.99 in)

Cured weight: 8.38 lbs (3.80 kg)

Attractions: Integrated FCS; different optics.

Cartridges and Paper Feeds

Caliber: 6.8x51mm SIG FURY

Circle/Feed: 20 rounds detachable magazine.

POWER

Maximum efficiency. Arrived: 1,700 feet (518 m | 567 m)

Rate of fire: 800 Number of revolutions

Mile speed: 2,900 ft/s (884m/s)