[Request] Capsule launcher sprites

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I have a mod adding a new turret that fires capsules, but I don't have any sprites for it. I'd really appreciate if anyone could help me.

The turret is a 3x3 entity, and it needs to have a large enough caliber since it fires grenades, capsules and combat robots.
It fires very slowly, but has a very long range.

I'd like this turret to fit in vanilla factorio style. I also need the matching icons for the item and the technology.
This turret only has 4 directions (no need for 45 degrees rotation like the railgun)
I don't know how to create a spritesheet at all, so ideally I'd need both the base, the mask and the glow sprite sheets ready to use.
I don't really have any art skills, so everything else is open to interpretation.