Usually the modern day word for 'mate' has been abbreviated to the simpler term of 'm8'; read as 'meight'. As you know the number 9>8 therefore we have the conclusion that m9 is better than m8.

Pronounced 'mnine'.
Bogan A: "G'day m9, how ya doing?"
Bogan B: "Doing well, m9. Yourself?"
by KitMencha May 28, 2014
Get a M9 mug for your cousin Günter.
Commonly thought of as mistakes on messenger services, however the terms are both equivalent to M8 - obviously an abbrieviation of the word "mate".
"oh hi there m9 LOL"
"hey m9, you cool you kerazy guy?"
etc etc
LARM
by David Larm July 10, 2008
Get a M9 mug for your buddy Paul.
The M9, as designated by the U.S. Military is a Beretta 92FS.

Sidearm of the U.S . Military.

The M9 pistol was tested to the extremes in a competition with other gun companies to replace the existing M1911 pistol serving the U.S. military through both World Wars, Korea, and Vietnam. In 1985, the 92FS was adopted with a capacity of 15 rounds + 1 in the chamber, doubling the capacity of the old 7 + 1 capacity Colts. Though it uses the smaller 9mm round compared to the earlier .45, it has been proven just as effective, plus the 92FS allows for greater accuracy, and far better reliability. The M9 service pistol can sustain more than 35,000 rounds fired, and the 92FS jams less often then almost any other pistol.

The 92FS is designed to operate under the most adverse weather conditions. Easy dissesembly by the turning of a lever allows for field stripping in the heat of battle, as opposed to some of the previous 1911s which sometimes required special tools to open.

The 92FS can fire without a magazine by inserting a round directly into the barrel.
Double Action / Single Action
(pull slide for first shot, semi-auto rest)

9mm
Ambidextrous Safety.
(About $579)
by GunCat February 21, 2004
Get a M9 mug for your friend Rihanna.
beretta M9 9mm semi-auto pistol, a peice of shit,..
a peice of metal, useless for the most part, more deadly when thrown then when fired, (or when attemping to fire anyway,...)
i pulled te trigger, but nothing happened so i threw my M9 at the bad guy and dropped him in his tracks
by 5811 April 01, 2009
Get a M9 mug for your fish Callisto.
Beretta 92FS 9mm semiautomatic pistol as adopted by the armed forces of the United States. Probably the sexiest gun of any type ever made.
My M4 burped on a whole shitload of sand, so I whipped out my M9 and continued engaging the bad guys with it.
by Lior Bar-On June 13, 2004
Get a M9 mug for your Facebook friend Nathalie.
It means mine
M8= mate
M9=mine
Hey mate that toy is M9
by Hayd18 December 08, 2014
Get a M9 mug for your dog Trump.