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Old January 23, 2013, 06:53 PM   #6
Senior Member
Join Date: September 21, 2008
Posts: 422
The .458 Socom upper will fit on any lower that takes .223R, 5.56, etc.

Standard .223 magazines will work without modification although insyructions included with my rifle it is RECOMMENDED a slight bevel is filed on the magazine.

I used standard unmodified (and MagPul) magazines for years without any problems.


Last edited by TimW77; January 26, 2013 at 08:18 PM.
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