Which statement about major rifle components is true?

• A. Major components include sights and scope.
• B. Major components include handguard and pistol grip.
• C. Major components include bayonet and lanyard.
• D. Major components include stock, receiver, barrel, action, magazine, trigger, and safety.

Answer: (D)

The key idea is to identify the parts that form the rifle’s basic structure and how it operates. The major components are the stock, receiver, barrel, action, magazine, trigger, and safety because they define how the rifle is held, how the firing mechanism is housed, how rounds are loaded and cycled, and how discharge is controlled. The stock provides the cheek weld and aiming platform; the receiver is the housing for the firing mechanism and the serialized frame; the barrel guides the bullet; the action is the mechanism that loads, seals, fires, and ejects cartridges; the magazine stores and feeds ammunition; the trigger initiates the shot; and the safety prevents accidental discharge. These parts together make up the essential, functional framework of the rifle.

Sights and scopes are aiming devices attached to the rifle but not part of the core mechanism. The handguard and pistol grip are ergonomics and protection that sit on the rifle, but they aren’t considered the fundamental components that define how the rifle operates. Bayonets and lanyards are accessory attachments rather than part of the essential operating system.