More than 1 hour.
yes u can, download and install San Andreas MOD installer (sami). you can download the desired weapon install it using sami
you need GTA 4 the complete addition, other whys you need both GTA TBoGT and GTA IV
it takes 1 hour to download
well when you download it, its pretty quick.
3 sec
Not to long as soon as you download it
A really long time
a long time
It will depend on your download speed. If you have a 30mb/s download speed it will take 2 seconds. If you have a 512kb/s download speed it will take 2 minutes
It takes couple of minutes to download.
forever
Typically, League of Legends does not take very long to download and update. The actual time will depend on your Internet speed.