User blog comment:Lasifer/The Console Wars: Master Chief vs. Samus Aran/@comment-5043545-20130401025335/@comment-4552610-20130401112530

Actually, the Anon has something. Official Metroid Prime website states that the Power Beam, Wave Beam and Plasma Beam all have a range of between 3 to 10 meters.

http://metroid.wikia.com/wiki/Power_Beam#Official_Metroid_Prime_website

http://metroid.wikia.com/wiki/Wave_Beam#Official_Metroid_Prime_website

http://metroid.wikia.com/wiki/Plasma_Beam#Official_Metroid_Prime_website