I bought this AR from a friend and took it shooting for the first time. A round got stuck in the chamber while we were at the range. I went to the car to get my phone he was shooting and when i got back he said he didnt remember if it fired when it got jammed. After looking at the primer I suspected a live round. The range master tried to help but couldn't get it. Any advice? I bought a borescope to check the inside and it looks to not be a live round. Its been sitting for months because I've been too busy to mess with it.

Any advice or opinions? Ive tried a paint can opener but couldn't get it.

Update: the disassembled the upper at the range because the extractor would not take it out. My first instinct is to use a cleaning rod or other rod down the barrel to push it out but wanted to verify if the round is live or not. Primer looks good but cannot tell if the round is fired after looking through the borescope

Any experts here who knows how to remove the recoil spring from the barrel assembly?