The Alternator (also referred to as the SP-14 Hatchet in concept art) is a Pilot anti-personnel twin-barrel submachine gun that makes its debut in Titanfall 2. Unlike the other weapons in Titanfall 2 (excluding the Flatline), this submachine gun has side-to-side recoil instead of vertical recoil commonly seen with other weapons. The "Hatchet" earned its nickname from its shape, high rate of fire and brutally "chopping" up its targets in close quarters engagements with its 10mm round. Its firing range is effective at 200 metres with a muzzle velocity of 800 m/s and a muzzle energy of 510j in 9.78 m/s^2 standard gravity.
Tried and true, the recoil dampening system is ideal for firing while in movement, which is an ideal selection for Shinobi-Class Pilots. Its high speed, lightweight, compact design allows for Pilots to operate melee weapons while accurately delivering a hail of gunfire downrange. Skilled pilots are known to eliminate whole squads of Drop Pod infantry in seconds armed with an SP-14 Hatchet and a Machete.
Originally, the Alternator was known as the Hatchet, due to its resemblance to said tool. The concept art for the Alternator depicts a weapon that functions completely differently from the weapon present in Titanfall 2 today, with faster fire rate than the R-97 Compact SMG.
The barrels actually push forwards while the Alternator is firing, implying that it may actually use a blow-forward mechanism.