Small Caliber and Infantry Weapons

Picatinny Arsenal is the focal point for many services for management oversight and planning for small arms. Examples of small caliber and infantry weapons being developed and/or fielded through Picatinny organizations follow:

The XM25 Counter Defilade Target Engagement (CDTE) System is the U.S. Army's latest developmental weapon designed to address the problem of defeating enemies behind cover, defilade and exposed targets at ranges and accuracies not seen in today's small arms by firing 25mm high-explosive airburst (HEAB) munitions. The XM25 incorporates full-solution target acquisition/fire control that integrates a thermal sight, 2x direct-view optics, a laser rangefinder, compass, fuze setter, ballistic computer, and internal display.

M4The M4/M4A1 5.56mm Carbine is designed for lightness, speed, mobility and firepower and is standard issue for brigade combat teams. Throughout more than 10 years of sustained combat operations, the M4 has proven itself an effective weapon system that serves our Soldiers extremely well. The system is one pound lighter and more portable than the M16 series of rifles. The M4 series of carbines can also be mounted with the M203A2 Grenade Launcher, M320 Grenade Launcher, or M26 Modular Accessory Shotgun System. The weapon has received many performance-based design improvements since its inception. The Army authorized the upgrade of all M4s to the M4A1 configuration in September 2010. The M4A1 has full auto capability, an ambidextrous fire selector and has a slightly heavier barrel that increases the sustained rate of fire.

M16A4The M16A2/A4 Series 5.56mm Rifle is the most prevalent combat rifle in the U.S. Army inventory. It is a gas-operated, air-cooled, shoulder-fired weapon that can be fired either in automatic three-round bursts or semi-automatic single shots. The M16A2 has an integral rear sight while the M16A4 includes a mil standard 1913 upper receiver and forward rail system with a back up iron sight. Both systems can accommodate modern optics and accessories, as well as configurations that incorporate M203 and M320 40mm grenade launchers.

M320The M320 Grenade Launcher enables Soldiers to accurately engage the enemy in daylight or total darkness out to 350 meters with 40mm low-velocity grenades. The M320 will replace all M203 series grenade launchers mounted on the M16/M4 series of rifles and carbines. The weapon includes a side-loading unrestricted breech that permits the system to fire longer 40mm projectiles (NATO standard and non-standard) and also features the enhanced safety of a double-action trigger/firing system.

M26The M26 12-Gauge Modular Accessory Shotgun System (MASS) provides Soldiers with a 12-gauge shotgun accessory attachment with lethal, less-than-lethal and door-breaching capabilities. The system attaches underneath the barrel of the M4 Carbine and provides a capability equivalent to a stand-alone shotgun without carrying a second separate weapon. The M26 can also be converted without tools to operate in a stand-alone mode. The Army began fielding the M26 to select engineer and MP units in 2012.

The M107 Semi-Automatic Long Range Sniper Rifle (LRSR) M107fires .50 caliber ammunition and is capable of delivering precise, rapid fire on materiel targets out to 2,000 meters. It is especially valuable during military operations in urban terrain where greater firepower and standoff ranges provide counter-sniper capability while enhancing sniper survivability.

The new XM2010 Enhanced Sniper Rifle (ESR) is a fully upgraded M24 Sniper Weapon System that has been rechambered to fire .300 WinMag ammunition. XM2010The bolt action, magazine-fed system provides precision fire on targets at ranges 50 percent further than existing 7.62mm sniper systems. The XM2010 is equipped with a suppressor and a fully adjustable right-folding chassis system featuring a monolithic MIL-STD 1913 accessory rail, and accessory cable routing channels. The shooter interface can be tailored to accommodate a wide range of shooter preferences. The XM2010 is fielded with a Leupold Mark 4 6.5-20x50mm Extended Range /Tactical Riflescope with a scalable ranging and targeting reticle and an AN/PVS-29 Clip-on Sniper Night Sight. The Army fielded the XM2010 to all sniper teams operating in Afghanistan in 2011.

M110The M110 Semi-Automatic Sniper System (SASS) is the U.S. Army's medium caliber sniper rifle that supplements the sniper's role to support combat operations with greater firepower and versatility. The 7.62mm SASS brings a semi-automatic capability to sniper teams and is particularly effective in urban areas where there are multiple targets and frequent close-combat situations. The M110 comes with a suppressor and incorporates a 3.5x10 scope with illuminated mil-reticle. It also comes with the M151 Enhanced Spotting Scope, which allows recognition and identification of targets at long distances. With powerful and bright optics, the spotting scope has 12-40x magnification with a 60mm objective lens diameter. The scope has a Leupold mil dot (round dot) reticle for both range estimation and tactical collaboration with the shooter. The scope is weatherproof and fog-proof.

M14EBRThe M14 7.62MM Enhanced Battle Rifle (EBR) provides infantry squads operating in Afghanistan with interim capability to engage enemy targets beyond the range of M4 Carbines and M16 Rifles. The weapon is air-cooled, gas-operated, and magazine-fed. It is a modern M14 rifle mated to an enhanced aluminum billet stock, tactical scope, and cantilever mount. The rifle is effective in close quarters combat and in the conceptual Squad Designated Marksman role.

M9The M9 9mm Pistol enhances lethality and survivability in close combat situations via a pistol with rail attachment capabilities. It is the primary sidearm of the crew served weapon crewmen and others who have a personal defense requirement, such as law enforcement personnel, unit leaders, and aviators.

The M68 Close Combat Optic (CCO) is a red dot aiming device that enhances target acquisition speed, allowing Soldiers to engage targets up to 300 meters with both eyes open to maintain situational awareness. The sight has no magnification and can be used with all current night vision enhancements.

The M150 Rifle Combat Optic (RCO) is a rugged, battery-free, 4x magnified optic that provides full mission profile optical capability for use on M4/M16/M249 weapon systems. Enhanced capabilities provided by the M150 RCO include range estimation, which, along with the bullet drop compensated reticle, provides accurate target engagements out to 800 meters for trained operators.

CROWSThe M153 Common Remotely Operated Weapon Station (CROWS) provides Soldiers with the ability to acquire and engage targets while protected inside an armored vehicle. CROWS is a stabilized mount that contains a sensor suite and fire control software, allowing on-the-move target acquisition and first-burst target engagement. Capable of target engagement under day and night conditions, the CROWS sensor suite includes a daytime video camera, thermal camera, and laser rangefinder. CROWS is designed to mount on any tactical vehicle and supports the MK19 40mm Grenade Machine Gun, M2 .50 Caliber Machine Gun, M240B 7.62mm Machine Gun, and M249 5.56mm Squad Automatic Weapon.

MK19The MK19 40mm Grenade Machine Gun (GMG) is an air-cooled, belt-fed, blowback-operated, fully automatic weapon system. It has a maximum effective range of 2,212 meters for area targets and 1,500 meters for point targets. It fires standard high velocity 40mm grenade cartridges, including M383 high-explosive antipersonnel rounds, high-explosive dual-purpose (antipersonnel and armor-piercing) rounds, and training practice rounds. The MK19 supports the Soldier in offensive and defensive roles by delivering a heavy volume of accurate and continuous firepower against enemy personnel and lightly armored vehicles. It can be mounted on a tripod or on multiple vehicle platforms and is the primary suppressive weapon for combat support and combat service support units.

M2The M2 .50 Caliber Machine Gun is automatic, belt-fed, recoil-operated, and air-cooled. The battle-proven system mounts on the M3 tripod and on most vehicles while also serving as an anti-personnel and anti-aircraft weapon. It is highly effective against light armored vehicles, low- and slow-flying aircraft, and small boats. The M2 provides automatic weapon suppressive fire for offensive and defensive purposes. It is capable of single-shot (ground M2 Machine Gun) and automatic fire. In post combat surveys, Soldiers rate the M2 among the most effective weapon systems in their small arms arsenal.

The M2A1 with quick change barrel and fixed headspace and timing is an enhancement to the M2 .50 Caliber Machine Gun offering Soldiers increased performance and design improvements that make it easier and safer to use. The M2A1 speeds target engagement and improves survivability and safety by reducing the time required to change the barrel and eliminating the need to manually adjust headspace and timing. The M2A1 also provides a flash hider that reduces muzzle flash by 95 percent, making the weapon less detectable in darkness. The Army began fielding the M2A1 in 2011 and plans to upgrade its entire fleet of 45,000 M2s to the M2A1 standard.

M240BThe M240B 7.62mm Medium Machine Gun is a ground-mounted, gas-operated, crew served machine gun. The cyclic rate is 550 to 650 rounds per minute, and the weapon's maximum effective range against area targets is 1,800 meters. It comes with an accessory rail integrated with the top cover that is used to attach sighting devices. It is issued to infantry, armor, field artillery, and combat engineer units that require medium-support fire.

The M240L 7.62mm Medium Machine Gun (Light) weighs approximately five pounds less than the existing M240B while meeting all of its reliability and operational characteristics. The M240L incorporates titanium construction and alternative manufacturing methods to achieve its weight savings. These improvements reduce the Soldier's combat load while the weapon system's short barrel and collapsible buttstock configuration allow easier handling and movement of the weapon. Designated an "Army's Greatest Invention" of 2010, the M240L is rugged and reliable and has a minimum 50,000 round receiver life.

The M240H 7.62mm Machine Gun (Aviation Version) is designed for aviation application and demonstrates reliability equal to that of the M240B. It delivers two minutes of continuous suppressive fire and is removable for use in a ground role. It replaces the M60D machine gun for the UH-60 Black Hawk and CH-47 Chinook helicopters as part of their defensive armament systems.

The M249 5.56mm Squad Automatic Weapon (SAW) serves as an automatic rifle and light machine gun for infantry squads. The M249 SAW is an air-cooled, belt-fed 5.56mm weapon with fixed headspace and a quick change barrel. The weapon can be fired from the shoulder, bipod/tripod mounted, or vehicle mounted positions. It replaced the M16 rifle in the squad automatic rifle role.