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Page AR-15 » Rifles, Uppers, Lowers, Barrels, and more
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Archived [ARCHIVED THREAD] - Can you explain how a barrel free-floats on an AR?
Posted: 10/1/2005 5:14:01 AM EDT
I've heard about free-floating a barrel for years, but I don't actually understand what the term describes.  And on an AR, how does the gas block and gas tube not affect this?  Also, how does a forearm free-float around a barrel?  I've never checked the mechanism on my AR close enough to see how it could work.

Link Posted: 10/1/2005 6:24:46 AM EDT
[#1]
Rather simple explanation via the pic :

The barrel nut of some fashion holds the barrel onto the uppers as normal, then a tube is attached to the barrel nut to hide/cover/provide handguard/decoration....  The short section of tube screws onto the barrel nut.  These are 9mm, but gas operated be somewhat similar.





Here it is attached, see barrel sticking slightly from tube ...

Link Posted: 10/7/2005 7:16:33 PM EDT
[#2]
The barrel is attached to the upper receiver and nothing else touches the barrel = free floating.  So stress from handguards, vertical grip doesn't effect accuracy.  
Archived [ARCHIVED THREAD] - Can you explain how a barrel free-floats on an AR?
Page AR-15 » Rifles, Uppers, Lowers, Barrels, and more
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