Weapons can be obtained via Item Shop or Black Market, using in-game currency GP or real-money Cash (term vary on each servers). They can also be obtained by picking up from the ground during gameplay, either already left there by mapmakers or from dead players. In Mutation Mode and Zombie Mode, weapons can also be obtained from supply crates.
Weapons in CrossFire are divided into eight categories: Rifle, SMG, Shotgun, Sniper Rifle, Machine Gun, Handgun, Melee and Throwable. Players can buy Ammo Mag to increase total ammo for each type of weapons.
Each player can carry one Primary weapon (Rifle, SMG, Shotgun, Sniper Rifle, Machine Gun), one Sidearm (Any Handgun or the Dual Double Barrel ), one Melee (The default Knife / Wood Hammer or any other Melee weapons) and up to three Throwable weapons. Players have two Bags to store weapons to bring into gameplay, and they can buy Bag3 and Bag4 to bring two other set of weapons into gameplay.
After weapons are used in gameplay (Except Mutation Mode), weapons will start to wear out and decrease accuracy; players can repair them by spending GP earned after each match. Heavily damaged weapons are often hard to control as the crosshair will be very large, making aiming difficult. Damaged weapons, when sold, will earn less GP because the amount of GP needed to repair it will be deduced from the payout. Some special weapons from Reward crates won't wear out, as do event prizes given to players by publishers on occasion. Melee weapon never wears out though some may feature damage bar, but they will always be at 100%.
Only GP weapons bought from Item Shop can be sold back for GP. Cash weapons can only be rented temporarily so they can't be sold - instead, players have the option to renew the renting time in their Storage (Trying to buy it again will add a second gun into players' storage instead). Main Prized Weapons won from Black Market are permanent and cannot be sold back; this was likely done to prevent account vandalism should players share their account with other friends. Temporary weapons won from Black Market sometimes won't have renew option - they are categorized as "Black Market Weapons" to prevent duplicating.
- CF China: GP weapons cannot be sold back for GP, they can only be deleted.
- CF Korea, Japan: Permanent weapons won from Black Market can be sold back for GP
- CF Vietnam: Some GP weapons cannot be sold back for GP once bought.
- CF Japan: All weapons have an extra magazine comparing to other CF servers.