MEC weapons can target and destroy terrain with the Collateral Damage ability.These stack for a potential five shots per reload. The Ammo Conservation Foundry upgrade allows two additional shots, and the Expanded Storage ability one. MEC weapons have the lowest ammo capacity in the game, permitting only two shots per reload.Ammo count, damage area and special effects can be changed or added via abilities.LMGs have the highest terrain damage of all primary weapon types.LMGs have the lowest critical hit chance of all primary weapon types.The Ammo Conservation Foundry upgrade allows three additional shots per reload. Heavy weapons have the second lowest ammo capacity in the game, permitting only three shots per reload.Shotguns have the second highest critical hit chance available to XCOM.In contrast, the Aim bonus at close range is doubled. Shotguns have the smallest effective range of all primary weapon types, being subjected to an Aim penalty over long distances.A sniper rifle cannot be fired after the soldier wielding it moves unless the soldier has received special training.Sniper rifles have the highest critical hit chance available to XCOM.Unlike other weapons, the accuracy of a sniper rifle decreases the closer the target is.Light Plasma Rifle has a +10 Aim bonus.

Usable by Rookie- ranked soldiers, as well as the Assault and Support classes.

Pistols do not require reloading during combat.

Damage is increased by 1 with Improved Pistol III, and by 2 with Gunslinger.

A +10 Aim bonus is gained with Improved Pistol II.

Critical Chance is increased by 20% with Improved Pistol I.

Usable by Rookie- ranked soldiers, as well as the Assault, Sniper and Support classes. The following is a list of weapons available to XCOM forces in XCOM: Enemy Unknown and XCOM: Enemy Within.

Level 3: Plasma weapons, Alloy Cannon, and Particle Cannon EW.

Level 2: Beam weapons, Railgun EW, and Rocket Launcher.

Level 1: Conventional weapons (excluding the Rocket Launcher).On occasion a class ability (such as the Sniper's Headshot or a Heavy's Mayhem) is related to the weapon's technology level. to improve equipped weapons, or an Arc Thrower to capture live aliens, among other useful equipment. A soldier's item slot can hold a variety of grenades, a S.C.O.P.E. Secondary weapons vary they include pistols, rocket launchers, and a wide range of tactical subsystems available to MEC Troopers that are installed directly to a MEC EW. Primary weapons are a soldier's main source of firepower in combat they include rifles, sniper rifles, shotguns, and LMGs. Soldiers carry a primary weapon, secondary weapon, and an item (two with Tactical Rigging in XCOM: Enemy Within).

Xcom enemy within tech tree