When using the M4 iron sights, what is the proper alignment?

• A. The firer centers the rear sight in front of the front sight and keeps the target sharp.
• B. The firer aligns the tip of the front sight post in the center of the rear aperture and focuses on the front sight; the target should appear blurry.
• C. The firer aligns the front sight with the target and keeps the rear sight out of view.
• D. The firer aligns the front and rear sights so there is equal height and light between the sights.

Answer: (B)