Interesting that you refer to RMDG11.
There are several instances of helpful cross referencing in that document - such as:-
Liquids Over 1 Litre - specifying that these liquids must not classified as dangerous goods.
Human or animal samples - specifying that these may only be sent by qualified practitioner etc..
Electronic devices sent with or connected to lithium batteries - specifying the number and power of batteries etc..
PLUS Packaging Guidelines include other restrictions on numbers, weights, volumes etc..
All very helpful.
As you know, Guns for Sporting Use refers to (Section 1 and Section 2 firearms, low-powered air weapons and their component parts).
There is no cross referencing to gas cylinders being dangerous goods. In fact, there is no cross referencing at all. The Packaging Guidelines go on to say that Parcelforce will accept only low-powered air weapons and must be sent using Express 48 via the Post Office.
Other than including the sender's name & address, there are no other packaging restrictions.
This is not helpful and I think we have already established that it is not consistent with the RM on-line guide either.
I would hope that someone from RM will accept that its guidance on Guns for Sporting Use needs improvement and it should clarify that gas cylinders are considered not to be component parts of low-powered air weapons and are classified as dangerous goods. This will avoid any future confusion.