Marui M4 MWS Volante Steel Bolt
 

Does anyone here have experience with volante airsoft's steel bolt for M4 MWS? Also is the bolt something that can be imported into Canada?

Reference import laws, but generally it's usually dependant on the mood of the CBSA agent on duty that day. There has always been this issue with CBSA not being very familiar with the exact laws of this and has always fallen into a "luck of the draw" scenario. I have managed to get multiple rifles access, while at the same time having things like mags, mock suppressors, receivers and even just outer barrels turned away. Your best bet is buying domestically or having a domestic retailer special order it for you for higher success

No problem importing the bolt.