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Old 02-09-2012, 04:06 AM   #11
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Originally Posted by vmkeith View Post
I'm no expert with monolithic uppers and this is my opinion: From what I've seen, a conventional free floating handguard is threaded onto the barrel nut. With the monolithic uppers, the upper receiver and the handguard/rails are machined as one piece, with it still resembling and functioning as a free floating handguard. Since everything is machined as one piece, with no additional attachment points, it makes the assembly more stable.
I understand that but 1stMarine said, "Also makes free float rails that aren't part of the reciever more stable as its basiaclly an extra attach point to the upper. Looks cooler too..."

If it's a mono upper how can the rail be seperate from the receiver? Kinda defeats the idea of mono. Correct?


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Old 02-09-2012, 04:10 AM   #12
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I understand that but 1stMarine said, "Also makes free float rails that aren't part of the reciever more stable as its basiaclly an extra attach point to the upper. Looks cooler too..."

If it's a mono upper how can the rail be seperate from the receiver? Kinda defeats the idea of mono. Correct?
I see your point...I just misread his post.


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Old 02-09-2012, 04:14 AM   #13
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I see your point...I just misread his post.
I'm thinking I must be misreading it as well.
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Old 02-09-2012, 10:50 AM   #14
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I meant that in reference to the mk12 spr mod 0 upper, how it has a built in riser that attaches to the top rail of any ar, then threads onto the barrel nut of the reciever. Not about one that was machined as part of the upper.

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Old 02-15-2012, 02:32 PM   #15
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Another nice part of the mono upper is the ones I have seen have a barrel nut included in the assembly that is more of a spanner nut and does not have to be aligned with the gas tube because it stays closer to the profile of the barrel.



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