These are gonna be restricted because of barrel lenght (16"), but will they really by identified as "AR15 variants" by the RCMP ?
Imagine that piston system in a 20" upper... What would make such "Gas Piston Rifle" any different, mecanically than an XCR or AR180b ? maybe it would be the possibility of putting back a standard AR15 upper in seconds, or maybe it would be the upper and lower receivers which are very similar to a standard AR...
Anyways, I was just thinking this could be the start to the "De-restrict the AR15 project"...