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9/13/2009 10:16:20 AM EDT
I am trying to what AR to keep.
I have a piston 12" SBR and a 16" piston.
Is there any documentation available for what range barrel lengths have an impact on lethality, etc.

I have read that certain SBR lengths aren't good out to certain ranges, etc.

Can anyone help!

Thanks!
9/13/2009 2:13:52 PM EDT
[#1]
http://ammo.ar15.com/ammo/

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