A Constructo weapon was a weapon from the Constructo line of weapons, which could be customized with Constructo Mods to change the functionality of the weapon to the player's liking. These mods could change the ammo type, trigger, and barrel among other things. The color scheme of a Constructo weapon could also be customized using one of several pre-made color schemes or custom one. There were three Constructo weapons: the Constructo Pistol, the Constructo Bomb Glove, and the Constructo Shotgun. When a Constructo weapon reached V5, it became a Mega Constructo weapon. The Constructo weapon slogan was: "Versatile weapons for the versatile traveler."
"Are you tired of having to purchase a different weapon for every occasion? Then try GrummelNet’s new Constructo line, and take charge of your arsenal. Each weapon can be modified with any Constructo-approved upgrade: Rate of fire, ammo type, specialty triggers. If you can dream it, Constructo can deliver it! Now available in three flavours: The Constructo Bomb Glove, Constructo Pistol and Constructo Shotgun."
Each weapon in the line had upgrades to be unlocked. The upgrade system acted a lot like the weapon mod system from earlier games. Ratchet sometimes found scattered constructo mods around levels. They the took the form of a case with a shiny piece of intel within them. As soon as he found it, he was given the chance to modify his Constructo Weapon.
The Constructo Pistol was the main constructo firearm that Ratchet had in his arsenal. The player could edit the trigger, chamber, upgrade and paint. They could choose a preset paint style or customise the primary, secondary and trim colours. The upgrades varied in between having the bullets ricochet, or for them to explode on impact. The trigger changes were about how the pistol released the stock. It included having a multi-shot system, single shot system or charging up system.
The Constructo Bomb was a Bomb Glove-like weapon which acted like many explosive weapons in the previous games. The player could add an "effect" to it, though it was only an aesthetic attribute; it boosted the uniqueness of the weapon. Such effects included a spinning, sparking disc attached to the weapon. Upgrades included having the blast radius changed, and also having smaller bombs explode along with the main bomb.
The Shotgun was a lot like the previous shotgun-type weapons, like the Blitz Gun. It allows the player to take out multiple enemies. The mods allow the barrel and shell to change, and the player can add an upgrade such as stunning, or extra damage. The barrel can be changed to sacrifice spread for range and power, or range for spread and so on. The shots' mods only allow for more power, really, but can really change a battle's outcome.