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12/11/2007 5:50:24 PM EDT
Well I assembled my lower a month or two ago and now I can not figure out what to do for the upper.  I know I want a flat top, but that is it.  The gun will be used for 3 gun comps and I will not be doing any shooting out past 100 yards.  So I am leaning towards a 16" with m4 ramps, but I am not sure of what twist rate.  So I am calling upon you pros to guide me.
12/11/2007 6:15:03 PM EDT
[#1]
I'd go 1-7 for the widest ammo selection.
12/12/2007 6:18:17 AM EDT
[#2]
For a competition gun 1/8 twist appears to be best bet.  It has a good rep for handling all bullet weights.  
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