Firearms and Other Weapons
Interpretation
Definitions
84 (1) In this Part,
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restricted firearm means
....
(b) a firearm that
(i) is not a prohibited firearm,
(ii) has a barrel less than 470 mm in length, and
(iii) is capable of discharging centre-fire ammunition in a semi-automatic manner,
(c) a firearm that is designed or adapted to be fired when reduced to a length of less than 660 mm by folding, telescoping or otherwise, or
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prohibited firearm means
......
(b) a firearm that is adapted from a rifle or shotgun, whether by sawing, cutting or any other alteration, and that, as so adapted,
(i) is less than 660 mm in length, or
(ii) is 660 mm or greater in length and has a barrel less than 457 mm in length,
...
So, if it comes from the factory short then it is not Prohibited? But would a gunsmith with a Manufacturing Licence be able to shorten a bolt action rifle barrel?