augh_howdidIgethere I did it :D
User can turn into a glycerin riffle

Pros:
-user can change any size of gun form
-user can make glycerin bullets from body (shell and gun powder)
-user has flawless skin
-user can dispense glycerin in human form

Cons:
-user can't float or operate gun form alone
-user will strain glycerin glands in body
-user still has to use bone marrow and water in creating bullets

Weakness: overuse
User will weaken greatly and exhaust glycerin glands