I bought a new complete upper off Gunbroker. It is a new 16in heavy bbl.
I attached it to a Spikes lower that hasn’t given me any problems whatsoever.
Threw on a LPVO, cleaned the bore, added a few drops of oil and went to Element Range to sight it In. Sighting in took less than 10 rds at 36 yds. Groups were excellent with Scorpion(Czech) .223. Issue is the bolt won’t hold open after last round, I was using almost new Magpul 20 rd and beat up GI mag. Same issue. Tried LC green tips, same issue. No other problems, brass ejects 3-4 o’clock. Yes, the bolt will lock back if I put in an empty mag. Thoughts?
I attached it to a Spikes lower that hasn’t given me any problems whatsoever.
Threw on a LPVO, cleaned the bore, added a few drops of oil and went to Element Range to sight it In. Sighting in took less than 10 rds at 36 yds. Groups were excellent with Scorpion(Czech) .223. Issue is the bolt won’t hold open after last round, I was using almost new Magpul 20 rd and beat up GI mag. Same issue. Tried LC green tips, same issue. No other problems, brass ejects 3-4 o’clock. Yes, the bolt will lock back if I put in an empty mag. Thoughts?