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TimW77 · January 23, 2013, 07:53 PM

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.

T.

January 23, 2013, 07:53 PM	#6
TimW77 Senior Member Join Date: September 22, 2008 Posts: 222	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. T. Last edited by TimW77; January 26, 2013 at 09:18 PM.