Currently we have 4 complete ballistic weapon families:
Needlers: Light Needler - Heavy Needler - Storm Needler
Linear motors: Railgun - Hypervelocity Driver - Gauss Cannon
Assault guns: Light Assault Gun - Assault Chaingun - Hephaestus Assault Gun
Large bore cannons: Light Mortar - Heavy Mauler - Hellbore Cannon
Then we have 2 other families with three weapons, but with two weapons per family that are light:
Machine Guns: Light Machine Gun - Light Dual Machine Gun - Heavy Machine Gun
Autocannons: Light Autocannon - Light Dual Autocannon - Heavy Autocannon
I really like the machine gun and autocannon families and I feel they are incomplete somehow without a large mount version. Drawing on real life for inspiration I suggest the below two new weapons:
Volley GunPrimary Role: Point Defense
OP: 28
DPS: 1200
Damage Type: Kinetic
Range: 400
Flux/sec: 600
Shots/min: 2000
Ammo: 2500
Affectionately known as "Chicago Piano" by the gun crew after an archaic weapon of the same layout. Volley Gun is a weapon system mounting 8 light machine guns in a single package designed to throwing up a fearsome wall of lead in the face of incoming fighters and missiles. The extreme volume of fire is also excellent at downing shields if the enemy gets within its rather limited range. Heavy gauge, cryogenic cooled barrels allow the volley gun to use larger propellent load, enabling it to match the range of the larger bore heavy machine guns.
Autocannon BatteryPrimary Role: Close Support
OP: 18
DPS: 400
Damage Type: Kinetic
Range: 800
Flux/sec: 300
Shots/min: 160
Ammo: 200
Mounting four autocannons, the Autocannon Battery is capable of sustained fire rather than burst like its smaller brothers. High volume of medium caliber inert projects offers a low tech solution against shields but like all autocannons has trouble hitting fast moving targets due to low projectile velocity.