11-03-2019, 07:39 PM
AA, Maxim, JP and Millennium (Monster Group Buy) bolts get good reviews. I bought two AA extractors after breaking my first on my 16” carbine gas barrel.
Without measuring the gas port and knowing the barrel length hard to say if the upper is over gassed. You can’t always go by ejection pattern but my 16” barrel will eject at 2 O Clock with hotter ammo. The particular buffer spring and buffer weight also play into the timing of an AR-15.
You could use the google custom search on Barrier Defense to get an idea on quality. Barrier Defense isn’t one of the common vendors mentioned on this forum.
Here is a link to the 6.5 Grendel forum custom search.
https://cse.google.com/cse?cx=0163689474...cu1o&hl=en
Without measuring the gas port and knowing the barrel length hard to say if the upper is over gassed. You can’t always go by ejection pattern but my 16” barrel will eject at 2 O Clock with hotter ammo. The particular buffer spring and buffer weight also play into the timing of an AR-15.
You could use the google custom search on Barrier Defense to get an idea on quality. Barrier Defense isn’t one of the common vendors mentioned on this forum.
Here is a link to the 6.5 Grendel forum custom search.
https://cse.google.com/cse?cx=0163689474...cu1o&hl=en