I just bought my first AR-15 two days ago. It's a Bushmaster A3 20" with the carry handle and the camo plastic.
It looks like the mag bottom plate detent pin is "sealed". Can I remove this and disassemble this mag? I would like to disassemble the mag, insert into the gun, and let the bolt go back and forth over the feed lips before firing it for the first time.
Please don't tell me to remove the follower and trash the Bushmaster mag. I don't have any others yet.
Thanks for the help.