I have some M11/9 shockwave mags that I bought brand new. I know these are supposed to be self leveling feed lips. I cycled the bolt on the empty magizines quite a few times. When I took them out for the first time on my Max11k upper, it jammed up just a few times and then they have been running flawless. 147gr subs with a suppressor.
I am using the same magazines on the Max 11 mk2 upper (147gr with NO supressor). I can't get past the first round and sometimes 3-5 rounds before it jams up. Round is 3/4 in the chamber with the bolt stopped short of closing.
It seems like the magazines hang up more on this upper. Could the issue be the subs without the additional backpressure from the suppressor? Or is there something else I can do to the bolt or magazines to get them to function better.
Next time out I will try 124 grain supersonic to see if that makes any difference.
I am using the same magazines on the Max 11 mk2 upper (147gr with NO supressor). I can't get past the first round and sometimes 3-5 rounds before it jams up. Round is 3/4 in the chamber with the bolt stopped short of closing.
It seems like the magazines hang up more on this upper. Could the issue be the subs without the additional backpressure from the suppressor? Or is there something else I can do to the bolt or magazines to get them to function better.
Next time out I will try 124 grain supersonic to see if that makes any difference.