Tico is seen sitting in a chair looking and moving his head after he was shot dead earlier in the episode as the cops are clearing the room.
While you can lawfully purchase a gun via the Internet, it must be shipped to an FFL (Federal Firearms Licensee) who must submit the same paperwork and do the same background check as would be done in a store before you can take possession.
You cannot have the gun sent to you.
You cannot have the gun sent to you.