Buffer question

[ubet]

I have a colt 6920 and am waiting on a sionics upper to replace the current upper. Everything other than the trigger in the colt is stock, am I going to need to replace the buffer going from a carbine to mid length shooting 77grs bullets? As it is right now my brass is ejecting at 2 o clock.

Thanks

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[hk_shootr]

Run the set up you have and see how it operates. Sionics’ barrels are generally gassed properly.
You might need to change to an H or H2 dependent upon the ammo.

[titsonritz]

Run the set up you have and see how it operates. Sionics’ barrels are generally gassed properly.
You might need to change to an H or H2 dependent upon the ammo.

It already has an H

[kirkland]

H should work fine in a 16 middy

[Sierrahotel83]

H is what I have used in both 16" and 14.5" middy, always ran fine for me. Until I switched my rifle to an A5 that is.

[hk_shootr]

It already has an H

Yep......it sure does. I need more coffee.....

[ubet]

Ok, i'll wait and try it out. I'm really excited about the sionics upper. I hope it's as accurate as they sound.

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[rocket 442]

An "H" buffer is the minimum. Carbine buffers get tossed.

[kirkland]

Carbine buffer works fine in a 16 middy too.

[Pappabear]

The holy grail is the A5 system. BCM or Vltor makes such offerings. Read and look into the A5. H or H2 will work fine, just not best.

PB