Yes I now firearms law But your license for FAC air it states make , cal and serial number , doesn’t state length of barrel same with FAC air ammunition pellets are not stated like live ammunitionYou need to have a very close look at Section 57 of the Firearms Act and at the definition of Firearm.
Spartan Law sums this nicely and I quote
What is a ‘Firearm’?
Possession of a firearm is defined in section 57 (1) of The Firearms Act 1968 as ‘a lethal barrelled weapon of any description from which any shot, bullet or another missile can be discharged. It includes any prohibited weapon, any component part of such a weapon and any accessory to such weapon designed or adapted to diminish the noise or flash caused by firing the weapon.
Possession of a Firearm
It is an offence under section 1 of the Firearms Act 1968 to possess a firearm, certain air weapons and certain ammunition without a certificate. It is an absolute offence and this means that the prosecution only has to show that the defendant knew he has something in his possession. It is irrelevant what he knew or thought it was.
So as OP states he wants to acquire another barrel for a Firearm. Whilst it might be powered by air, it is not legally an “airweapon”. An “airweapon” is defined as having a muzzle energy of less than 12 ft / lbs.
Another barrel is a component part of a rifle and is thus treated effectively as another firearm.
The only way that the OP can change the barrel length without a variation is take the Firearm to an RFD and the RFD swaps over the barrels, and he surrenders the original barrel. Exact same procedure as having any firearm rebarreled in the same calibre.
Don’t forget serial number on fx guns are on the block not on the barrel & like I said anyone can buy a airgun barrel or liner , even if guns aren’t your thing
yes you might be right but you can buy different linersNot in Scotland you cannot by an air rifle with out an air weapons certificate. Serial number or not on barrel is irrelevant. If you have a component part for a firearm without appropriate authority you are in breech of the Firearms Act.
In Englandshire you can buy an air rifle barrel for an air rifle as its not a component part of a Firearm. You can also buy a moderator for an air rifle. But as soon as you buy either with the intent of putting them onto a firearm they are classified as a component part of a firearm and this need authority. That is, as you will undoubtedly understand, is how the law is written.



