Same round, different weapon design.
Different makers. The cartridge used is the 9x19.
None to really speak of. They are, for the most part, one and the same. The 9mm NATO is merely a variant of the 9mm Luger loaded for military specifications.
The 9mm Lugar round is longer than a .380 Caliber, which is also equal to 9mm in diameter. The overall cartridge and the bullet is larger and the case contains more powder. The 9mm Lugar is more powerful. BTW, the .40 cal Smith and Wesson is also called a 10mm. It is only 1mm larger in diameter and a little more powerful than a 9mm Lugar.
The caliber for one.
Glock is a brand. 9mm is a caliber size. So, there is no difference between a 9mm glock and a 9mm of another brand as far as caliber size.
No such ammuntion as 9mm rugger
Neither one exists, so there are no differences. However, there is a cartridge known as the 9mm Luger. It is chambered by many makers in pistols. Ruger is one of them.
9mm = .355 40 cal = .40
The value of a Browning 9mm 1945 serial number 693398a depends on its condition. This gun in excellent condition is valued between 600.00 and 800.00 as of 2014.
Browning Double Mode
Case length.
Your Browning Hi-Power 9mm handgun was made in the year 1959,and will bring between 300-600 dollars depending on overall condition and a good bore.