2015 HO guidance to firearms law stated this at paragraph 13.74:
The term “component part” may be held (according to case law) as including (i) the barrel, chamber, cylinder, (ii) frame, body or receiver, (iii) breech, block, bolt or other mechanism for containing the charge at the rear of the chamber (iv), any other part of the firearm upon which the pressure caused by firing the weapon impinges directly.
Magazines, sights and furniture are not considered component parts. The 9th report of the Firearms Consultative Committee provides additional information on this subject.
In July 2015, the Law Commission tried to get the 30 plus pieces of primary legislation - plus all the other bits of secondary legislation - codified through a consultation paper. The Commission sought views on a change to the definitions in the 1968 act to be:
1, the barrel, chamber, cylinder;
2, the frame, body or receivers upper and lower where present in the complete firearm;and
3, the breech, block, bolt or other mechanism for containing the charge at the rear of the chamber.
In addition, they proposed that as a matter of law, a component part will remain such so long as it is capable of fulfilling its intended function as part of a firearm. Plus that the Home Sec could add to this definition by order as required.
What did the HO do? Sweet FA.......but did (un) helpfully, remove from their guidance, all paragraphs after 13.68 in their updated document, published in 2022. Bit unfair there, legislative time was tight around this period, due to the election in 2017; and the self absorption Whitehall had with trying to deliver on the 2016 referendum.
Only place that a magazine specifically requires a FAC is in NI; as their Firearms Order 2004 states it does. This is more to do with the history of the six counties though......
The primary Act, the Firearms Act 1968, was a consolidating measure. The 1968 Act was hurried through Parliament. It has been suggested that the Act was enacted without sufficient consultation and preparation first being undertaken which perhaps explains some of the Act’s deficiencies. The Act moved from being a Bill put to Parliament on 21 Jan1965; to receiving Royal Assent in August the same year. For context, a Bill on average, takes about a year to become law. Significant Bills, substantially longer.
So, the upshot in reality about magazines is who the f**k knows.......? Certainly not the HO. Courts haven't wanted to play with that AFAIK - probably as they don't understand firearms legislation....... when the Court of Appeal describes the legislation as “labyrinthine” ( R v L [2015] EWCA Crim 5 ), you know that no one really has a clue what's going on........
At the moment, it seems that common sense has broken out around the sale and transfer of magazines. Hopefully that will continue.
However as soon as the out of date firearms legislation and guidance causes another f**k up, (maybe someone buys one online and uses it as part of a 3D printed weapon?); I'm sure we will get another ill thought out piece of secondary legislation piled on top of a teetering and creaking pile of orders, statue, directives and guidance that forms firearms law and interpretation......
Oh, and just to say, I am one of the minority potentially......an ex copper who has a grasp of firearms legislation/provisions.....

