In theResident Evil 4remake, upgrading a gun means maxing out its stats. Each weapon in the game can be upgraded from Level 1 to Level 5, which eventually unlocks the Exclusive Perk, a unique feature for that specific gun.
Like the originalRE4, the remake handles the weapon upgrades at the Merchant sites. The player must interact with the mysterious vendor, go to the Tune-Up section, and pay enough Pesetas to level up a weapon. A maxed-out gun, however, will also need an Exclusive Upgrade to achieve its full potential.

RELATED:Resident Evil 4 Remake: How to Get All Weapons
How to Fully Upgrade Weapons in RE4 Remake
To fully upgrade a weapon, the player must buy all Tune-Ups of a specific gun and unlock its unique perk. A weapon is only maxed-out if its primary stats (i.e., Fire Power, Rate of Fire, Reload Speed, and Capacity) are Level-5 and has the Exclusive Upgrade equipped.
Although upgrading the base stats requires Pesetas, other ways exist to get the Exclusive Perks. The player could either pay the price for it in Pesetas,exchange Spinelsfor a Golden Ticket at the Merchant or get them through in-game microtransactions.

Max-Out a Gun’s Stats to Unlock Its Exclusive Perk
One way to fully upgrade a weapon isby investing Pesetas in it. By purchasing all the Tune-Up offers at the Merchant, the Exclusive Upgrade unlocks. But note that this method is expensive and will cost about 400,000 Pesetas—or more—for most weapons.
Buy an Exclusive Upgrade Ticket from the Merchant
An Exclusive Upgrade Ticket is a special pass that allows the player to get a gun’s unique perk regardless of its level. The ticket can be purchased at theTrade section of the Merchantfor 30 Spinels each.
Normally, the player should buy all other upgrades before they’re able to get the unique perks. But the Exclusive Upgrade Ticket gives them early access to this feature—though it doesn’t max out other stats. (All it does is activate the unique perk early.)
Buy Exclusive Upgrades as a Paid Add-On
With the 1.04 update, players can obtain Exclusive Upgrade Tickets by paying real-world money. For that, they must go to the game’s Add-Ons and purchase a single ticket for $2.99—or a bundle of five for $9.99. (Currently, these microtransactions are the fastest ways to fully upgrade any weapon.)
How Much It Costs to Fully Upgrade a Weapon
On average, it costs about 400,000 Pesetas to max out a weapon in theResident Evil 4remake. But the price can go up depending on the rarity and power of the weapon.
The following table shows each gun’s Exclusive Upgrade perk and price.
304,000
352,000
2.0x Power
384,000
1.5x Power
401,000
400,000
343,000
514,000
353,000
Penetration boost
279000
Penetration boot
434,000
660,000
540,000
347000
2x Power
416,000
2x Rate of Fire
430,000
364,000
505,000
299,000
2x Ammo
210,000
1.5x Speed
263,000
260,000
Indestructibility
TheResident Evil 4remake is available now for PC, PlayStation 4, PlayStation 5, and Xbox Series X/S.
FAQ
Q: What’s the cheapest gun to fully upgrade in the RE4 remake?
Knives aside, the cheapest weapon to upgrade in the remake of Resident Evil 4 is Punisher, which costs 279,000 Pesetas to max out.
Q: Which weapon’s full upgrade is the most expensive?
The most expensive gun to upgrade in the RE4 remake is Chicago Sweeper. The player must play a whopping 660,000 Pesetas to maximize its power.