Don't need to wait. Don't limit your LTATT by putting the serial# on the app. All ranges (ie POCO) should provide the form with the pertinent info entered to allow transporting any restricted with reg. paper any time of day from/to range, gunsmith and US border.
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Also, when is the earliest I can phone/fax my BC CFO to obtain LTATT? Once the firearm is shipped in transit or after picking it up from post office?
Thanks.