Your approach creates even more inconsistency within the lab, and it just opens up more troubles for the lab and for us.
The Lab makes a choice. The recognize these as commonly available pistols. The same goes for the XCR and AR15 pistols. The lab and everyone here cannot have their cake and eat it too. At least they are consistent in this area.
We can only argue based on the choice they have made on the status of the Charger as a pistol. People need to focus on the fact that these magazines, especially those that were designed or made before 2008, could only be designed or made for the rifle. There is absolutely no basis to declare ALL 10/22 mags as prohibit device. This is their mistake, and it is completely NOT what the regulation said. It will not stand in the court of law.
Also, magazines originally designed for rifles are always unmarked. They made the manufacturers mark the LAR15 mags and all the regular rifle AR15 mags are unmarked. Therefore, by default, all the 10/22 unmarked mags are for rifle based on precedent made by the lab itself. If the RCMP wants to limit pistol mags, only those that are marked for pistol should be limited to 10 rounds. They need to play by their own rules and precedent. This is the key argument to win and to release all the mags held back right now and prevent this ridiculous interpretation to go retroactively on all magazines currently in country. Precedent is the key.
These are REALISTIC arguments and actually have legs to stand on, not pipe dreams