Federation Weapons

The Galactic Federation has been seen using several types of weapons.

Types
Arm Cannon: In the Prime Series, GF Marines were seen using rectangular arm cannons that are detachable, unlike Samus Aran's arm cannon.

PED: The Phazon Enhancement Device is a weapon, most likely not used anymore, that allows GF Marines to go into Hypermode and highten the power of their Arm Cannons much more than the pathetically weak normal mode.

Lyle's Rifle: The Assault Rifle that Lyle Smithsonian uses in Metroid: Other M is a large gun that is much larger than Freeze Guns or the others' rifles.

Freeze Guns: Freeze Guns are the equivalent of Samus' Ice Beam, allowing soldiers to freeze targets and allow for someone to break apart that frozen enemy apart. They are lethal to humans.

GF Army Rifle: GF Standard Issue Rifles are weapons used by the other soldiers in Metroid: Other M.

Plasma Gun: The Plasma Gun is a large weapon carried on a backpack that must charge, apparently taking a long time to do so. Anthony Higgs used one.

Explosives: Demolition Troopers use a powerful bomb carried on their backs that are activated by pressing several buttons.