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Posted: 11/22/2012 5:30:50 AM EST
I posted this question in the build section & got a bunch of views, but no answer. I'm hopeful someone with more experience than I have can help.

How does one determine if their buffer & spring are appropriate for a particular gun? Most builds are from mil-spec parts kits. In my case, Green Mountain Barrel was selling 14" 5.56 NATO barrels meant for a company making piston ARs. The gas port looked bigger than my 16" carbine port. The 2.5" Vortex & spacer make the barrel 16.25". I'm using an M16 BCG for safety. Green Mtn said the barrel would work with either a piston or direct gas gun.

The gun works great with XM193, but I haven't tried anything else. Cases get ejected to about the same place as and cases look fine. But, I've reads about "over-gassed" ARs beating themselves into early wear & failure––which I'm trying to avoid, as I like this gun.

How does one determine if a heavier buffer or spring is required? Or, does one simply buy & experiment?

Thank you & Happy Thanksgiving!
Link Posted: 11/22/2012 6:44:53 AM EST
[Last Edit: 11/22/2012 6:50:18 AM EST by Dano523]
Link Posted: 11/22/2012 8:03:45 AM EST
Thank you for the info. Will try other ammo to see what happens.

Happy Thanksgiving!
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