I can attest to Marvin's seriousness. I was the Buccaneer's leader, and he was teaching me to mod weapons in the process of making those guns.
We had private server testing and everything. It was a beautiful SNAC alternative. It had an unfortunate habit of instakilling enemies in small ships if the circumstances were just right. Basically, the angle of the two ships, and exactly where the projectiles went after firing made a difference, and the dispersion was completely random. You could also manage to miss an enemy completely from close range thanks to the dispersion.
It would've been a terror to fight against, even though it's useful range was far below that of the SNAC for the same damage. A lot of fun, even if it'll never see Disco.