The Shells of a Launcher defines how the projectile reacts to a surface.

Please note, these names and descriptions are directly from the game!

Tier 1 Tier 2 Tier 3 Description Range
ImpactImpact Improved Impact Advanced Impact Standard metal shell that explodes on impact. All
BouncyBouncy Improved Bouncy Advanced Bouncy Rubberized shell that bounces when it hits surfaces. All
StickySticky Improved Sticky Advanced Sticky Spiky shell that sticks to surfaces and players. Can be used to make mines. All
None ReboundingRebounding Advanced Rebounding Extra-bouncy shell that rebounds serveral times before detonating. All