What Gun Does Military Use

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The United States military’s arsenal represents a sophisticated and constantly evolving collection of firearms designed to meet the most demanding operational requirements. As of 2026, the military has undergone significant modernization in its small arms inventory, introducing cutting-edge weapons that enhance combat effectiveness and soldier performance.

Primary Military Firearms in 2026

The U.S. military’s current firearm lineup showcases a blend of proven platforms and innovative new designs. Key weapons include:

Assault Rifles and Carbines

M7 Carbine: A next-generation assault rifle introduced in 2025, replacing the M4A1 for close combat forces
M4A1: Still in service, but gradually being phased out
HK416: Used by special operations units like Delta Force
SIG Sauer MCX: Utilized by special operations forces

Pistols

SIG Sauer M17/M18: Standard-issue sidearm across multiple branches
Glock 19: Widely used in special operations forces
Glock 17: Limited use in special operations

Machine Guns

M250: New light machine gun introduced in 2025
M249: Current squad automatic weapon, being gradually replaced
M240: General-purpose machine gun
M2A1: Heavy machine gun, mounted on vehicles or tripods

Specialized Weapons

M110 SASS: Semi-automatic sniper rifle
M2010 ESR: Long-range sniper rifle
Mossberg 590A1: Pump-action shotgun

Technological Advancements and Challenges

The transition to new weapon systems hasn’t been without controversy. Captain Braden Trent’s 2025 report highlighted several concerns with the new M7 rifle:

Reduced ammunition capacity (20 rounds vs. 30 rounds)
Increased weight affecting maneuverability
Potential mechanical reliability issues

Despite these challenges, the military continues to prioritize weapon modernization to maintain a technological edge.

Strategic Considerations

The selection of military firearms goes beyond mere technical specifications. Factors influencing weapon choices include:

Compatibility with NATO standards
Adaptability to diverse combat environments
Logistical support and maintenance requirements
Performance in various operational scenarios

Geopolitical Implications

The modernization of small arms plays a subtle but crucial role in maintaining military readiness. The standardization of weapons across NATO and allied nations ensures:

Interoperability between different military forces
Consistent training and support mechanisms
Strategic deterrence through technological superiority

Why does the military change its firearms?

The military continuously updates its firearms to improve soldier effectiveness, incorporate technological advancements, and address emerging battlefield challenges.

How often are military firearms replaced?

Typically, major weapon systems are replaced every 15-25 years, depending on technological innovations and operational requirements.

Are these weapons used by all military branches?

While there is significant overlap, each branch may have slight variations in weapon selection based on their specific operational needs.