Related Clues:

• Org. with its arms around the U.S.?
• 2nd Amendment org.
• Shooters' gp.
• Many-armed org.
• Prominent D.C. lobby
• Sr.'s lobbyist gp.
• Colt's fans?
• "Right to bear arms" gp.
• US Grant once headed it
• 50-and-over group
• Org. of piece keepers?
• Group that holds a National Senior Spelling Bee
• Pro-arms org.
• Seniors' gp.
• Well-armed org.?