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Posted: 3/5/2006 1:02:28 PM EDT
I am newbie to building an AR-15. I have purchased a Stag and a High Standard lower reciever, two Stag lower parts kits and now don't know where to start with the uppers. I have seen M4, A4, A2 and so forth but don't really know the difference between these. I would like to put on a complete upper from Stag (H2) but don't know what type it is. Need some knowledge from you all season builders on this forum. I would like to build a good CQB and a good match riffle.

Joe
Link Posted: 3/5/2006 1:34:36 PM EDT
Here's the quick rundown:

M4 = Flat top upper with 14.5" or 16" barrel with turned down section for M203 grenade launcher mounting.

A2 = Carry handle upper with 20" barrel.

A4 = Flat top upper with 20" barrel.
Link Posted: 3/5/2006 4:36:19 PM EDT
Thanks for clearing that up. So I guess that CQB will be a complete Stag upper and the match riffle will be a CMT upper with a bull stainless 20". I am correct with these build?

Joe
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