At the risk of ruining an asbestos suit, the M16 A2 wins hands down. Basic load of 210 rounds (+ another 30 in the rifle if you want). Regardless of what the pundits say, the M16 is a reliable and accurate weapon. Best is a relative term. I'd much rather carry an A2 day in/day out and have it in a fire fight than a SMLE, Garand, Krag or other rifle listed. If I didn't have to carry it, sure I'd like the umph a 30 caliber round gives, either in 303 Brit, 30-06 or even 308, but for humping, I'll take the M16 anyday. For a combat pistol, there is no doubt, John Moses was right 93 years ago and still is. The 1911 is king of the jungle. Barring a 1911, and given a choice, I'd carry the medium Glock with tritium sights in 45 caliber if called back from retirement.