LCrazy I know why not ask Canada Ammo why it was allowed, the response is clear from the manufacturer about warranty & liability concerns. I have no doubt that if a warranty issue occurs regarding barrels, IWI will address that issue without concern and trust me they are not a exception to this rule, try buying a separate H&K barrel for your SL8 / MR223 / MR 308 - not possible when inquiries had been made in the past.
gadget