ITAR, USML and Glock magazines...

[Odd Job]

I have been looking into this because I have my eye on a rifle which is being made here in the UK, which will accept 33 round Glock magazines. I visit the US every year and so it will be cheaper to get those mags there and bring them back to the UK with me. The import side into the UK is covered by my Firearms Certificate (I would have to pay duty though).

But...I can't work out whether I would need to get an export permit to allow me to buy those mags in the US and take them out the country. I've looked at the US Munitions List Categories I and II and I assume that magazines are included in general terms, but an exemption can be made if the component is a minor component worth less than $100:

V. EXEMPTIONS

A. LICENSING EXEMPTIONS: The ITAR provides for certain exemptions relative to the
transfers of firearms and ammunition. Please read the complete applicable section of the ITAR:

 123.17(b) Obsolete firearms and models - Non-automatic firearms that were
manufactured on or before 1898, as well as replicas of such firearms, are exempt.

 123. 17(c) Temporary export of firearms and ammunition for personal use - U.S.
persons may export temporarily not more than three non-automatic firearms and not
more than 1,000 cartridges of ammunition provided this is for the person's exclusive
use and not for re-export or other transfer of ownership (i.e., firearms for use on
hunting trips or sporting events).

 123.17(a) Minor components - Components and parts for Category I firearms are
exempt from licensing requirements when the total value does not exceed $100
wholesale in any single transaction. Barrels, cylinders, receivers (frames), or
complete breech mechanisms are major components and require a license.

 123.18 Firearms for personal use for members of the U.S. armed forces and
civilian employees of the U.S. Government - Non-automatic firearms may be
exported for personal use and not for resale or transfer of ownership if the firearms
are accompanied by written authorization from the commanding officer or Chief of
the U.S. Diplomatic Mission

I am not seeing any more detail in the annotated ITAR found here.