The Giat TML 105 stabilized turret installed on the Vextra 105 is a light 3-man turret armed with a 105 mm CN 105 G2 NATO standard low recoil gun. The turret's electro-hydraulic drive has been replaced by an all-electric system by SIG of Switzerland. It is controlled by a digital computer and allows the turret and the gun to be finely stabilized. The gun is fitted with electrical aiming system, muzzle brake, fume extractor and thermal sleeve. Elevation is from -6 to +15 degrees.

The stabilized gun can fire a range of standard NATO ammunition including APFSDS (Armour Piercing Fin-Stabilized Discarding Sabot) rounds. Twelve rounds of ready to fire 105 mm ammunition are carried with 23 rounds stowed.

Secondary armament on the turret is a coaxially mounted 7.62 mm machine gun.

The armoured vehicle is protected against 14.5 mm heavy machine gun rounds and artillery splinters. Modular or reactive armour can be fitted to provide protection against medium caliber and infantry missiles.

Vextra 105 is fitted with the Galix close defense system, which consists of four launchers for 80 mm rounds either side of the gun at the front of the vehicle and three on each side at the rear. Types of rounds include: instant smoke screen round (in the visible spectrum), instant wide area smoke round (in the visible and infrared spectrum), illumination round and infrared decoy round.

The gunner's station is fitted with the SAGEM Savan 15 three-axis stabilized sight similar to that used on the Leclerc main battle tank. Savan 15 sensors include a dual field of view thermal imager, high resolution TV channel and laser rangefinder (eye safe if required) coupled with a digital fire control computer for sensor management and ballistic calculations.