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11/15/2012 4:42:18 PM EDT
So I got a used Matech on my 18" rifle.

The instructions I got off a thread on here say to use the 300m setting for a M4 and the white line for a 20" rifle.

I take it I should probably use the white line for my 18" gun? And zero at 25m as normal?
11/15/2012 5:20:19 PM EDT
[#1]
Rifle length gas with a FSB and M855 ammo? If so, use the dash. Either way it is best to confirm at the farthest range you can.
Dustin
11/16/2012 3:53:29 AM EDT
[#2]
Or set it at 200 and zero at 50.
 
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