If this is a factory built rifle you need to contact the manufacturer before you do anything or you may void the warranty..
There is a lot of information already posted on this forum about gas related/ejection issues..I would read up on those first..
Clocked-out of alignment gas block/over sized for barrel journal/loose gas blcok
Cracked gas tube/ worn gas tube button
Loose carrier key/out of spec carrier key
Gas inefficient bolt carrier/bolt gas ring issue
Buffer spring weight/recoil spring
Tight chamber
Short chamber
Rough chamber
Ammunition type/issue/sizing
Barrel port location/size
Extractor issues
Magazine feed lip/fit to rifle/issues
Sometimes it may be an undersized gas port, but reaming out the barrel port should be the last option when all other possibilities are eliminated.. Process of elimination..
There is a lot of information already posted on this forum about gas related/ejection issues..I would read up on those first..
Clocked-out of alignment gas block/over sized for barrel journal/loose gas blcok
Cracked gas tube/ worn gas tube button
Loose carrier key/out of spec carrier key
Gas inefficient bolt carrier/bolt gas ring issue
Buffer spring weight/recoil spring
Tight chamber
Short chamber
Rough chamber
Ammunition type/issue/sizing
Barrel port location/size
Extractor issues
Magazine feed lip/fit to rifle/issues
Sometimes it may be an undersized gas port, but reaming out the barrel port should be the last option when all other possibilities are eliminated.. Process of elimination..