According to the Hunting Ordinance 1993, as amended in 2019, air guns cannot be used to shoot animals except in a building to kill crows, magpies, jackdaws, stone pigeons and unprotected mammals other than wild cats.  It is illegal to possess or use a blaster gel, BB gun or airsoft weapon for self-defence or protection in New South Wales. Since BB guns, airsoft guns, and yellow trucks are all considered «firearms,» their use and possession are highly regulated. Obtaining a «licence» for this type of weapon for the purposes of protection or self-defence is prohibited under section 12 of the Firearms Act. Obtaining a licence for this type of firearm for protective purposes is not necessarily prohibited, but section 12 of the Firearms Regulations states that the Commissioner of New South Wales «may» refuse a person permission to use or possess it if the purpose of obtaining one is for his or her personal protection. Protection of property or for the protection of another person. The obligations to store firearms do not apply to air rifles (cf. § 36 para. 1 sentence 1 WaffG); They can only be kept inaccessible to minors. Gel blasters are also commonly referred to as gel guns, hydroblasters or Gelsoft guns. Its projectiles are water balls made of superabsorbent polymer from 6 to 8 mm (also called hydrogel balls, gel balls or water balls). Brazilian legislation, which regulates the manufacture, import, export, trade, trafficking and use of air rifles, divides them into two groups: obtaining licenses or permits for yellow trucks, airsofts or BB weapons A yellow truck is considered a «firearm» in Victoria and, as such, it is illegal to own or use a yellow truck unless you have a valid firearms licence. Owning or using a firearm without a firearms licence in Victoria carries penalties of up to two years in prison in local district court for summary firearms-related offences.
Tougher penalties apply to more serious firearms offences dealt with by higher courts. Victoria`s Firearms Acts define a firearm as a device designed to discharge a shot, bullet or other missile by the expansion of gases produced by the ignition of highly flammable materials or by compressed air or other gases, whether mechanically stored in the device in pressure vessels or in the device. in accordance with section 3 of the Firearms Act 1996 (Vic). The same gun laws apply to yellow trucks in Melbourne. Air rifles with a muzzle velocity greater than 152.4 metres per second (500 feet per second) and a muzzle energy greater than 5.7 joules (4.2 foot-pounds) are firearms within the meaning of the Firearms Act and the Criminal Code.  Typically, the manufacturer`s specifications are used to determine the muzzle velocity and energy of the design. Air rifles that meet these speed and energy criteria are generally classified as non-restricted firearms. However, some are classified as restricted or prohibited based on the exact design of the air rifle. Air pistols are classified as restricted if their barrel is longer than 105 mm or prohibited if their barrel length is less than or equal to 105 mm. Legal possession of these air rifles requires that the owner have a valid firearm licence and that the air rifle be registered as a firearm. While many consider them toys, the firing mechanism of BB pistols and yellow trucks uses compressed air to fuel pellets, bullets or other projectiles. Therefore, they meet the definition of firearms.
No. Just as airsoft guns are not legal in Australia, airsoft sports are not legal either. A purchase permit is not required for air guns purchased before 1. were manufactured and placed on the market in Germany in January 1970 or before 2 April 1991 in the territory of the former GDR (WaffG, Annex 2, Section 1, paragraph 2, 1.2); They can be freely acquired and owned, regardless of their initial energy or the absence of an «F-in-pentagon» mark. It is illegal to possess a blaster gel or BB gun in New South Wales without a valid licence. Air forces with an initial energy greater than 7.5 J, such as field target weapons, are treated as firearms and therefore require appropriate authorization to purchase and possess. To obtain the permit, proof of need, a clean criminal record and the successful completion of a knowledge and handling test (§ 4 para. 1 WaffG) are required.
Gel blasters are usually battery-powered spring-loaded plastic guns. When the trigger is depressed, its spring hammer hits the valve in the middle of the «grenade base,» which releases the gas stored in the cartridge through its cap holes. This then leads and sprays gels on a targeted target. A yellow truck can typically fire soft gel projectiles up to about 250 feet per second. It is similar to an automatic airsoft electric gun (AEG) or a gas return airsoft, but unlike airsoft guns, the gel blaster gun has an uneven orb shape and its lighter weight and larger projectile size result in a lower muzzle velocity. This makes them probably the safest among other types of airsoft and BB weapons. In Sweden, air rifles are considered firearms and usually require a license. However, weapons with limited energy, defined as an initial energy not exceeding 10 joules, measured four meters from the muzzle, such as air guns and paintball guns, do not require a license. They may only be used by minors under the age of 18 if they hold a permit or if the minor is under the supervision of an adult. Fully automatic weapons with limited energy should not exceed 3 joules.  Possession, acquisition or supply of an unregistered BB pistol, gel gun or airsoft weapon is punishable by up to 5 years in prison. If the weapon is considered a pistol, the maximum penalty is 14 years in prison.
These violations can also result in a fine of $5,500.