Tech Shells

Implements TG's Technological Shotgun Shells

-Allows you to create blank tech shells at R&D
-Can combine with components to make three types of bullets:
(1)Dragon's Breath rounds (just like the ones in nuke ops bulldogs)
(2) Meteor Shot (middle damage round that stuns+throws people around)
(3) Pulse shot (a pulse rifle shot that does 40 damage instead of 50--yes, it will destroy walls).