Mid-length ejection angle

[Wow]

I was wondering for those of you who have 16" 5.56 Ar15 with midlength gas systems, at what angle does your ar eject? I have one at 3 o'clock and one at 4 o'clock. I now wish I'd gone with carbine length gas just for the increased reliability.

At what o'clock does your middy eject? I am feeling underpowered at 4.

[Clint]

It sounds like your rifles are running perfectly.

4 o'clock ejection alone does not mean the upper is undergassed or unreliable.

[titsonritz]

100% dependant on ammo being used, M855 spits out of my 14.5" & 16" mids at about 3:30-4:00, PMC Bronze dribble out at about 5-5:30 o'clock but still locks back on the last round.

4 o'clock is perfect IMO.

[T2C]

It sounds like your rifles are running perfectly.

4 o'clock ejection alone does not mean the upper is undergassed or unreliable.

Agree. ^^^^

I've fired tens of thousands of rounds out of 16" barrels with mid-length gas systems with minimal issues and I haven't heard enough complaints that would lead me to believe they are unreliable.

[ST911]

My criteria:
Does my rifle complete the cycle of operations?
Does it do so across the range of loads I use, exp lightest and hottest?
Does it do so in the weather conditions expected during my use?

[Wow]

The reason I started this thread is because my 16" midlength AR would not cycle with my A5 system with a A5 tube and A5-2 buffer. It would extract but cycle. It eject 4oclock now that it is on a carbine lower.
I do not run it suppressed.

[Clint]

If it feels weak and won't run with the A5, there may be an issue.

Like Georgeib said, possibly a leak due to improper assembly or out of spec parts.

Swapping in a known good BCG can help isolate the source.

Was this a build or a complete upper?

The reason I started this thread is because my 16" midlength AR would not cycle with my A5 system with a A5 tube and A5-2 buffer. It would extract but cycle. It eject 4oclock now that it is on a carbine lower.
I do not run it suppressed.

[vicious_cb]

I was wondering for those of you who have 16" 5.56 Ar15 with midlength gas systems, at what angle does your ar eject? I have one at 3 o'clock and one at 4 o'clock. I now wish I'd gone with carbine length gas just for the increased reliability.

At what o'clock does your middy eject? I am feeling underpowered at 4.

Ejection pattern is something you shouldnt care about unless you are having a problem in the first place.

[AndyLate]

Its been said many a time here - ejection angle is not an indicator of anything useful.

If your guns are reliable, who cares if they eject at 4 o'clock or 3?

Andy

I was typing while Vicious posted.

[Colt Carson]

I have a 16” carbine-length gas AR15, and wanted to add a mid-length gun. The carbine-length has been 100% reliable. The new 16” mid-length is short-stroking with top quality .223 69 grain ammunition. Sometimes it won’t lock back on last round, sometimes it won’t grab next round and fails to feed. It ejects at 4 o’clock or so. I haven’t done much troubleshooting, as I was kind of disgusted with it. I realize mine is an uncommon case, but these mid-lengths don’t look so attractive now. I have tried several different magazines and ammunition (.223).