Grand Theft Auto: San Andreas/Missions/Weapons

Los Santos

Mission	Gives	Removes
OG Loc	Sets SMG ammo to 78 [if ammo < 78], gives Uzi [if necessary] (when getting on the bike)
Just Business	Gives Uzi, adding 120 ammo (entering the building with Smoke), gives Uzi with 80 ammo (after the autoscroller)
Burning Desire	Pickup with Molotov Cocktails	Explosives Slot, Spraycan Slot (mission end)
Reuniting the Families	Shotgun (before entering the building)

Mission	Gives	Removes
Against All Odds	Gives 10 Satchels, convenient Pickup with 15 Satchels
Are You Going To San Fierro?	Gives RPG with 10 ammo

Mission	Gives	Removes
Outrider	Creates Pickup with x RPG to fill up to 20, creates Pickup with Sniper Rifle with x ammo to fill up to 40, convenient enemy drop for AK with 40 ammo (third roadblock) and some more less convenient AK drops
Jizzy	Sets SMG Slot ammo to 250 [if ammo < 250], gives Uzi [if necessary] (when getting into the Pimp Mobile)
Pier 69	Gives Sniper Rifle with 24 ammo [if ammo < 24] (before and after sniping), Tec9 with 300 ammo [if empty] (after killing T-Bone Mendez)
Toreno's Last Flight	Creates Pickups with 60 RPG / AK with 120 ammo (which stay after the mission)	Removes RPG from player (mission end)
The Da Nang Thang	Shotgun (enemy), Uzi Pickup	Lost everything but my blade.