These are not airsoft pistols but paintball pistols
2.5 joules applies to airsoft guns, which must be designed to fire plastic pellets no larger than 8mm.
The T4Es clearly don’t comply with that
https://www.legislation.gov.uk/ukpga/1968/27/section/57A?view=plain
[F157AException for airsoft guns
(1)An “airsoft gun” is not to be regarded as a firearm for the purposes of this Act.
(2)An “airsoft gun” is a barrelled weapon of any description which—
(a)is designed to discharge only a small plastic missile (whether or not it is also capable of discharging any other kind of missile), and
(b)is not capable of discharging a missile (of any kind) with kinetic energy at the muzzle of the weapon that exceeds the permitted level.
(3)“Small plastic missile” means a missile that—
(a)is made wholly or partly from plastics,
(b)is spherical, and
(c)does not exceed 8 millimetres in diameter.
(4)The permitted kinetic energy level is—
(a)in the case of a weapon which is capable of discharging two or more missiles successively without repeated pressure on the trigger, 1.3 joules;
(b)in any other case, 2.5 joules.
]
Before that exemption came in airsoft fines were treated as ‘low power air weapons’ (air guns)
Paintball guns (including the T4E) remain legal under the Firearms act as ‘low power air weapons, and must be powered below 12 foot pounds (air rifles) or within 6 foot pounds air pistols)
(exceeding those makes it a ‘dangerous air weapon’ and leads to section 5 territory)
(You have pistols so 6 foot pounds would apply which is approx 8 joules)
There is also case law (which established a little over 300fps as the velocity maximum for a paintball gun firing a ‘standard’ 0.68” paintball
Paintball has an ‘advantage’ that the Firearms act refers to lethality and the Home Office have (to date) accepted the frangibility of paintballs.
This is also aided by testing a few years back of a ‘new’ type of paintball
Paintball guns in the UK are legally recognised by the Home Office provided they are used with either paintballs or First strikes (which is a shaped round of a half sphere paintball with a fin)
(And not necessarily tested in the same manner but there are also ‘powder balls’ which would be frangible)
Potential problems that you could have against you are the circumstances of how they came to the attention of the police (such as in public) and what you have them loaded with
Solid balls have been sold in the UK, which are not legal to be fired. Rubber reballs have been sold for many years and there were also reball centres
If you have any of these other balls then you could be facing problems and would need to rely on treating them as airguns
If you live in Scotland then there is an air weapon certificate that’s required. (A mini licence). This does not / should not apply to paintball guns, but only if using frangible paintballs
https://www.legislation.gov.uk/uksi/1969/47/made
https://basc.org.uk/wp-content/uploads/downloads/2019/07/KNOW-YOUR-LAW-AIR-WEAPONS-2018.pdf
The T4Es are legal …… but should be used with paintballs
An option to consider is to buy UKPSF membership, but it could be too late to assist you
https://ukpsf.com
Get legal advice, and highlight the airweapon and paintball elements
You can also pop over to here:
https://p8ntballer-forums.com/threads/paintball-and-the-law.171875/
