AR15.Com Archives
 pics of free floating handguards.
GenoDinah  [Member]
12/20/2008 12:20:20 PM EDT
Hello, I am new to building ar's, can someone tell me how a free float handguard attaches to the upper reciever. When I was in the Army, we used the A2 models, I am trying to figure how a upper with the same ring will hold the float tube without it touching the barrel. Also, if it is something special, does that mean that I need to find a upper that can accomodate free floating handguards, or are there things I can change fast if I ever wanted to go back to regualar handguards, (not that I would). Please excuse me, I am extreamely new to this, and I have never built a rifle yet. Thanks.
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Limerick  [Member]
12/20/2008 12:46:23 PM EDT
If you don't want to remove the delta ring, etc, Daniel Defense offers the Omega rail system. It bolts onto the barrel nut and you do not have to remove the FSB to install.
Pricey but gives you FF without making any mods to your rifle.
GenoDinah  [Member]
12/20/2008 12:49:54 PM EDT
So most free float tubes attach to the delta ring?
Limerick  [Member]
12/20/2008 12:53:35 PM EDT
No, most require you remove the delta ring and barrel nut and have their own you attach their FF tubes to. Some require you remove the FSB too. There is a big thread on FF tubes here. Let me see if I can find it......
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ZekeMenuar  [Team Member]
12/20/2008 12:55:30 PM EDT
Originally Posted By GenoDinah:
So most free float tubes attach to the delta ring?

Some do, some don't.

This is a picture of a Clark Custom carbon fiber free float tube. The barrel nut is aluminum and is glued to the carbon fiber tube. The delta ring assembly is removed and thrown into a drawer for later.

Many of the round aluminum FF tubes attach in a similar manner.

Limerick  [Member]
12/20/2008 12:58:29 PM EDT
nicholsmf  [Team Member]
12/20/2008 1:40:07 PM EDT
JP-VTAC Free Float Tube

JP barrel nut replaces standard barrel nut. You put the JP barrel nut on and loctite it in place. Once the loctite sets p you install the float tube which is held in place with the screws that you see around the edges of the rear of the tube. Removal of FSB required.

LaRue Tactical

LaRue barrel nut replaces the standard barrel nut. Floated rails go into place and align with built in alignment pins and the locking ring goes on from the back side and tightens down. Then screw go through the keep in the back to keep it from spinning. Removal of FSB required. This is my favorite of all systems I have used.

Yankee Hill Machine

YHM barrel nut replaces the standard barrel nut. YHM float tube / rails thread onto the outside of the YHM barrel nut and screws thread in from the outside into holes in teh barrel nut to keep it from spinning. Removal of FSB required. There is a LaRue Tactical 12.0 sitting with this AR waiting to be installed the next time I am on leave.

Troy Industries

Cut off the delta ring and the two halves of the Troy rail clamp onto the standard barrel nut. Simple and effective design. No removal of the FSB required.

GenoDinah  [Member]
12/20/2008 2:01:16 PM EDT
Wow, I love the handguards on the first pic, are they vented on top also? What kind are they please?
HellRaiser6  [Member]
12/20/2008 2:16:06 PM EDT
The first one in nicholsmf post is a JP-VTAC rifle length tube. It's a modular free float that gives you the ability to add rails (12", 9", 7", 4", and 2") where you want them. It's a great tube and works really well. You have to remove the delta ring and barrel nut and use the parts that come with the tube. You can find them at:
Russ4777  [Team Member]
12/21/2008 9:39:49 AM EDT
Here's an examble of how most 2-piece F.F. tubes attach to the rifle. A separate barrel nut secures the barrel to the upper receiver. The tube is then inserted over the front of the barrel and screws onto threads on the outside of the barrel nut and does not touch the barrel anywhere else. Every manufacturer uses a slight variation of the same fundamental design. This happens to be a Hogue 2-piece tube.

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