The laser turret upgrades should apply to it as well, since it's in the same class. But when I tested it it didn't apply the firerate. I'll look into it again.
Even if they don't work, Teslas are good damage-suckers if placed before laser turrets ;)
By The Way Xerus, i've upgraded this mod to 0.16 and added two additional tiers (i should probably increase energy useage on tier 3 tho, currently 2MJ per shot), if you'd like to upgrade it please contact me on Discord as steam randomly disabled my steam account linked to factorio.
LightCat#5633