ok kevin, I'll do my best. You know I cross at emerson every night so I'll try to help. yes you can import up to 5000 rds of ammo without a permit. You better make sure that you have a rifle in that caliber registered to you. otherwise it opens up more questions. I carried my reg. cert. with me just in case they asked. You will only have to pay gst and pst on what you bring across. no duty. the stock will be ok. the 10 rd mags...NO!!! the law says you can only have 5rd mags unless the 10's are blocked. the 10rd mags are considered prohibited, so try to find those in canada. be aware that under u.s. law, non-resident alien visitors are not allowed to posess ammo. usually not a problem in g. forks, but during the day, they sometimes set up a roadblock at us customs and inspect cars and trucks leaving the u.s. don't offer any more info to customs than asked. at us customs, make sure you have birth cert, drivers lic. or passport. when you return to canada, they will ask you if you have any firearms. say no. if they ask about parts and ammo, say yes. any other questions, just ask.