Because I can't let it go:
1.Why would the crystal grenade launcher need hollow shells to form the rounds? At worst, couldn't you form the rounds in a sealable chamber, then move them into the barrel/open the chamber into the barrel and then fire?
2.Why does the launcher part need to be as large as a rifle? It wouldn't need a long barrel, because it doesn't necessarily have to be very accurate, and it shouldn't need a large/strong magnetic repulsion unit, because it's launched at such a low velocity. Further, to my knowledge, the Testament is fairly small, but just has a massive magazine. 'Taping' a small barrel and magnet on it shouldn't be too much of an issue. Especially if it can be designed so that it uses the Testament's normal magnetic propulsion.
3.Since you compared it to the Brisant (Pyro's grenade launcher), I'll state the differences. This is an attachment, whereas the Brisant is a standalone device. It should be much lighter, cheaper, less accurate, and weaker in general. The purpose of this device is to meet at least two of the following requirements: Be cheaper than the Brisant, Use cheaper rounds due to PSL fluid's remarkable price, and Be capable of airbursting. The first and last are probably mutually exclusive, and which one I would go for would originally have depended on what your answers to the questions in my previous post were.
Different, more interesting weapon:
5.Bring up the file for the MYTHRIL PENETRATOR! If you don't remember, that's the vibrating mythril rapier that some guy designed to poke through Battlesuits with. Specifically, I want just the tip of the thing, exact length TBD.
6.Use VR magic to accelerate that tiny mythril needle to high speeds, while imparting a spin, and fire it into the front of a Battlesuit. Increase the length/velocity of the needle until it penetrates into the cockpit, or I realize that this isn't a workable idea.
7.Once I have that, get a crystalline projector, and fire it at the very rear of the needle just before the needle is launched. If the crystal fails to grow inside the cockpit once the needle has penetrated, try firing slightly later, or adjusting the size of the needle. Is it possible for the needle to penetrate, carrying the crystal, then allowing the crystal to grow, eviscerating the inside of the cockpit?
For the Council, and fellow tinkerers, to explain the above: I want to make a CON weapon that is capable of defeating a battlesuit. There's only really two types of weapons that can do this effectively: Shoulder fired weapons, like an automanip launcher or ludicrous explosive launcher, or the Piezoelectric Shard Launcher. The former cost eight or nine tokens, the latter thirteen. The former get one shot per six to eight tokens, the latter gets 7.5 to the token. The former are good at doing anything that requires a big boom, the latter is good at destroying anything that can be damaged by a big hole.
Basically, if you use CON, need to kill a battlesuit, and are price-minded, you're never ever gonna buy anything aside from the PSL.
My device would hopefully be an alternative, and something to bridge the massive gap. It would be basically useless against anything that isn't a battlesuit, due to overpenetration, and it would probably cost a token per round, at least. However, it would hopefully be a good bit cheaper than a PSL.