A crackdown spearheaded by Liberty City mayor Julio Ochoa against firearm ownership in Liberty City and its surroundings has led to closure of legalized gun shops. As a result, illegal weapon dealers are the only source for purchasable weapons in GTA IV and its episodes. Given their covert nature, illegal gun shops are often far less visible than Ammu-Nation stores, usually having nondescript frontages and are only easily located by gun icons on the city map (or in the case of physical maps, scribbled markers).
Much like Ammu-Nation, the player must enter the gun shop before they can select and buy weapons. Different weapons are laid out all over the interior of the gun shop, requiring the player walk to a specific point to select a specific weapon; players will only be able to purchase a weapon when they have selected it, and if the player already has the same weapon in hand, the player can only purchase additional ammunition for smaller sums of cash; newly purchased weapons start out with only a single set of rounds. Players can find and access these gun shops at any point of the game, but in the case of GTA IV, most weapons are simply "Display Models" until the player completes specific missions in the game; episodic packs however make all of them except the RPG available from the start.
The gun shops present other weakness when compared with gun cars; prices of weapons from the gun shops are charged in full, whereas gun cars offer discounts - and gun cars are far more mobile as they can be dispatched to the closest point to the player. In addition, the gun shops in the episodic packs do not offer any exclusive weapons otherwise available from gun cars.
Like gun cars, players will have no access to gun shops when they have a wanted level of one star or above.
There are a total of three illegal gun shops in Liberty City, each located in three major segments of the city:
- A single storey corner shop at Montauk Avenue and Dillon Street, accessible off an alleyway off Dillon, Downtown, Broker, labeled inside as a "Lock & Load".
- In the basement level underneath "Body Canvas Tattoos" at the Bismark Avenue-Cavity Lane intersection in Chinatown, Algonquin.
- A single storey shop at Odhner Avenue and Traeger Road, accessible off an alleyway off Odhner, Port Tudor, Alderney. As it shares the same interior as the Broker outlet, it is also labeled inside as a "Lock & Load".
List of weapons
|Item||Cost||Availability (GTA IV)|
|Baseball Bat||$5||Do You Have Protection?|
|Pistol||$600; $35 for 17 additional rounds.||Do You Have Protection?|
|Combat Pistol||$1,500; $100 for 9 additional rounds.||Museum Piece|
|Molotov||$500 each.||The Master and the Molotov|
|Grenade||$1,000 each.||Deconstruction for Beginners|
|Pump Shotgun||$1,200; $100 for 8 additional rounds.||Search and Delete|
|Combat Shotgun||$2,500; $200 for 10 additional rounds.||Blow Your Cover|
|Micro SMG||$1,200; $100 for 50 additional rounds.||Do You Have Protection?|
|SMG||$2,500; $150 for 30 additional rounds.||Luck of the Irish|
|Assault Rifle||$3,500; $80 for 30 additional rounds.||Deconstruction for Beginners|
|Carbine Rifle||$5,000; $100 for 30 additional rounds.||Three Leaf Clover|
|Sniper Rifle||$6,000; $800 for 5 additional rounds.||Luck of the Irish|
|Combat Sniper||$8,500; $500 for 10 additional rounds.||Luck of the Irish|
|RPG||$10,000; $5,000 for 1 additional round.||Babysitting|
|Body Armor||$500||No Love Lost|