" Wow. That is really, really, really, incredibly wrong. Heard of ITAR? "
No I haven't. That's why I'm asking.
When and where exactly were you stopped by US Border Patrol when driving into Canada? I would really like to know.
I have driven back and forth many hundreds of times, and this has never been my experience. I have been waved through, and I have been shaken down. But it has ALWAYS been handled by the country I was entering.
In order for someone to export a firearm part, even a firing pin, spring or screw, three things must be in order:
1. The manufacturer must be registered with the US Dept of State;
2. The Exporter must have an Export Permit (issued by the US DOS); and
3. The shipment itself must have an Export License.
IF the Exporter has a permit, the requirement for the shipment to have an Export License is waived if the wholesale cost of the shipment is less than $100.00. The exporter still needs the permit and the manufacturer still needs to be registered.
If the parts are for a shotgun, the US Dept of Commerce governs the deal but the restrictions are still there.
These restrictions are due to the US ITAR regulations. They make no distinction between large companies or individuals or large shipments or just a single screw.
Whether you can or cannot 'get away with it' is not for discussion here on CGN (at least that's my understanding). Discussing how to get around the law is the same as discussing how to break the law - something rightly frowned upon here. If you are caught by US authorities trying to export firearms, firearm parts or ammo or components, you will be in deep s**t.
So the short answer is NO YOU CANNOT bring Crimson Trace or any other stocks or any other firearm part, no matter how small or insignificant, because of US ITAR regulations.