The ARX20 remotely controlled weapon station (RWS) developed and built by Nexter mounts the 20mm 10M621 automatic gun and fires 20×102 NATO ammunition at a rate of 750 rounds per minute. The new weapon station offers greater range and effect, compared to common RWS operating 12.7mm weapons while offering reduced weight and improved compactness, compared to equivalent 25-30mm turrets. Nexter maintains that the 20mm gun is particularly effective in asymmetric warfare operations, when engaging vehicle mounted, heavily gunned threats (14.5 / 23mm).
The turret has 100 rounds in the ammunition stowage. It traverses at full 360 degrees at a rate exceeding 60 degrees per second, thus completing a full circle in about six seconds. According to Nexter, the gyro stabilized mount can be operated and fired on the move and engage targets with effective range of up to 2,000 meters. The total system’s weight is 270 kg.