Which activity is involved in sighting-in a rifle?

• A. Lining up the rear and front sights
• B. Replacing the barrel with a new one
• C. Adjusting the trigger pull
• D. Calibrating the scope only

Answer: (A)

Sighting-in a rifle means getting the sights aligned so your point of aim matches your point of impact. The essential step is lining up the rear sight with the front sight to form a proper sight picture, which lets you shoot to where you intend. Replacing the barrel is a hardware change, not part of the sighting-in process. Adjusting the trigger pull affects how you release the shot but not where the bullet hits relative to the sight picture. Calibrating the scope is related to zeroing, but focusing only on the scope doesn’t establish the essential sight alignment with the barrels and sights used for aiming.