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Article: Tubes: the original trick.(Up On Ars)
- Article from:
- Guns Magazine
- Article date:
- March 1, 2005
- Author:
CopyrightCOPYRIGHT 2005 Publishers' Development Corporation. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Derrick Martin, one of the near-original AR-15 gunsmiths, has probably put together many more truly accurate AR-15 rifles than he can remember. Derrick says "float a good barrel" when asked how to get one to shoot. That's about it.
The "float" part is a handguard tube that anchors only to the upper receiver, leaving no-contact space around the barrel and gas tube. A gas block or manifold (whatever we want to call it, it's the part that connects the gas tube to the barrel so the tube can receive vented gas from the barrel gas port) has to attach to the barrel but nothing else then does. The handguard tube either doubles as or includes a barrel nut.
In a ...