This is basically what has me all messed up....
OVERALL LENGTH LESS THAN 26"/660mm RULES:
CC s. 84(1) "prohibited firearm" (b): This is another clause of the same law -- the one cited immediately above -- and it applies in the same way. If the firearm ARRIVES at the "less than 26"/660mm in overall length" condition by "sawing, cutting" etc., then it is forced into the "prohibited firearm" class. If it left the factory at that too-short length, the limit does NOT apply. It is non-restricted, UNLESS it is semi-automatic AND centrefire.
Example: A Remington Model 870 pump-action shotgun that has been fitted with a Scattergun Technologies 12"/305mm barrel and a Pachmayr pistol grip is less than 26"/660mm in overall length, but is NOT "prohibited." It is a "prohibited firearm" if this was done to a Remington 870 that left the factory with those parts, but it is non-restricted if it was re-manufactured and left the Scattergun Technologies factory with them. It doesn't HAVE to make sense -- it's GOVERNMENT POLICY.
Note that WHICH class the short firearm becomes -- non-restricted, "restricted" OR "prohibited" -- depends upon HOW it ARRIVED at that shortened length. That strongly reinforces what I have said above about the length determination -- overall OR barrel length -- NOT being enough to decide which class the firearm falls into. Knowing the WAY the firearm or barrel ARRIVED at that short length is vital to understanding this area of the law when determining the class of firearm.
So the way I read it is if I bought the gun and modified it myself it becomes restricted. However if I have the gun re-manufactured down below the 26 inch OAL then its not? Confusing.....