What was the best rifle in world war 1?

WWI is known for the first "modern" war with a bunch of new kinds of weapons being used on a massive scale with a big impact. The machinegun is such an invention. So I say the "best gun" of World War One is the Browning M1917 belt-fed water-cooled machinegun. This gun served in WWI, WWII and Korea, before it was replaced by the M60 in the 1960s just in time for Vietnam.

But WWI also was the first war to involve heavy use of semi-automatic handguns. The M1911 pistol in .45 caliber was America's standard pistol of the Great War (WWI). I think this is the "best" handgun used during the war because it had the longest service life. It was standard issue for our troops between WWI and the late 1980s, and it is STILL a very popular handgun among civilian shooters and private gun owners.