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Posted: 4/16/2006 9:20:18 AM EST
the title pretty much says it all.
Link Posted: 4/16/2006 9:21:44 AM EST
Link Posted: 4/16/2006 9:23:40 AM EST
the fsb i plan on using is a clamp on armalite so i don't know how much material I can take off of the bottom side of the fsb due to the heads on the screws.
Link Posted: 4/16/2006 10:26:13 AM EST
[Last Edit: 4/16/2006 10:28:36 AM EST by mongo001]
The rear of the LaRue tube is shaped to fit over their gas block, so if you really wanted to see how much you need to shave, get one and compare. The issue with shaving standard FSBs with pins is the pin area. You have to thin that area alot to get it to fit, and thus physical integrity becomes an issue. Pics to follow later.

PS: Another option would be to open up the rear of the LaRue tube.
Link Posted: 4/16/2006 10:54:30 AM EST
Link Posted: 4/16/2006 11:04:01 AM EST
+1 on not being able to shave the std fsb low enough and still being structually sound.


stop being cheap and get the right part for the job the first time.
Link Posted: 4/16/2006 12:25:43 PM EST
the shaved FSB works just fine with my Samson and I didn't have to take much material off at all around the pin area.

I just wanted to go with the larue tube this time to save weight on the build. I guess i'll just get the larue gas block then.

As far as being cheap, it's how I afford my toys.
Link Posted: 4/16/2006 12:29:11 PM EST

Originally Posted By BadSVT:

I just wanted to go with the larue tube this time to save weight on the build.




Then your buying the wrong tube.

Link Posted: 4/16/2006 12:37:51 PM EST

Originally Posted By Timanator:

Originally Posted By BadSVT:

I just wanted to go with the larue tube this time to save weight on the build.




Then your buying the wrong tube.




eh I thought about the DD but I don't know if I like the idea of the oval shape.
Link Posted: 4/16/2006 2:03:12 PM EST
I prefer shaved
Link Posted: 4/16/2006 2:17:15 PM EST
[Last Edit: 4/16/2006 2:20:57 PM EST by mongo001]
Some pics:

Some low profile gas blocks:

Left - Mongo special
Center - KAC
Right - LaRue



Three FF tubes:

Left - DD
Center - LaRue
Right - Troy/Samson



Finally, a pic of the fit between the LaRue tube and LaRue gas block.....................tight, isn't it?



For those who wonder...............................why is this an issue? When you are installing a FF tube that extends past your low profile gas block, you have to be able to install the gas tube and gas block first, then slide the tube over the installed gas block for final assembly. If your gas block is too tall/wide/whatever, you won't be able to install the tube, especially in the case of LaRue tubes.



Oh, and BTW, the LaRue tube is "oval" in the purest sense of the word, just not as "oval" as the DD. The LaRue is taller than it is wide..............not by much and not as much as the DD, but it is.
Link Posted: 4/16/2006 3:56:54 PM EST
well slap me on a stick and call me deep fried shit.

Thank's mongo. Looks like I might go with the DD tube(s) and run some PRI blocks.
Link Posted: 4/16/2006 9:24:09 PM EST
[Last Edit: 4/16/2006 9:24:34 PM EST by wyv3rn]
Thank you for great pictures. I didn't realize the fit was that close. Is it possible to have a LaRue GB taper pinned in place and still slide the LaRue HG over?
Link Posted: 4/17/2006 12:51:52 AM EST

Originally Posted By wyv3rn:
Thank you for great pictures. I didn't realize the fit was that close. Is it possible to have a LaRue GB taper pinned in place and still slide the LaRue HG over?



Yes - Link.


But................................................why????
Link Posted: 4/17/2006 8:03:15 AM EST
I've played with set screws for awhile now and have decided I don't like them and they don't inspire confidence in my weapon unless you are willing to red loctite the screws and green loctite the block itself to the barrel. I'd rather taper pin it.
Link Posted: 4/17/2006 11:08:48 AM EST

Originally Posted By wyv3rn:
I've played with set screws for awhile now and have decided I don't like them and they don't inspire confidence in my weapon unless you are willing to red loctite the screws and green loctite the block itself to the barrel. I'd rather taper pin it.



If you read the Noveske write up closely, they dimple the barrel where the setscrews go, use red Loctite on the setscrews and use Loctite to seal it to the barrel THEN pin it in place.

Proper barrel dimpling and use of Loctite would make any setscrew installed gas block bomb proof. The Noveske version is nuke proof.
Link Posted: 4/18/2006 9:54:25 AM EST

Originally Posted By mongo001:
Some pics:

Some low profile gas blocks:

Left - Mongo special
Center - KAC
Right - LaRue

img124.imageshack.us/img124/2038/dsc023973uh.jpg

Three FF tubes:

Left - DD
Center - LaRue
Right - Troy/Samson

img385.imageshack.us/img385/6167/dsc023980pm.jpg

Finally, a pic of the fit between the LaRue tube and LaRue gas block.....................tight, isn't it?

img45.imageshack.us/img45/8224/dsc023998gh.jpg

For those who wonder...............................why is this an issue? When you are installing a FF tube that extends past your low profile gas block, you have to be able to install the gas tube and gas block first, then slide the tube over the installed gas block for final assembly. If your gas block is too tall/wide/whatever, you won't be able to install the tube, especially in the case of LaRue tubes.



Oh, and BTW, the LaRue tube is "oval" in the purest sense of the word, just not as "oval" as the DD. The LaRue is taller than it is wide..............not by much and not as much as the DD, but it is.


Will a shaved FSB fit under a DD rail?
Link Posted: 4/18/2006 10:20:41 AM EST

Originally Posted By Burkey:

Originally Posted By mongo001:
Some pics:

Some low profile gas blocks:

Left - Mongo special
Center - KAC
Right - LaRue

img124.imageshack.us/img124/2038/dsc023973uh.jpg</a>

Three FF tubes:

Left - DD
Center - LaRue
Right - Troy/Samson

img385.imageshack.us/img385/6167/dsc023980pm.jpg</a>

Finally, a pic of the fit between the LaRue tube and LaRue gas block.....................tight, isn't it?

img45.imageshack.us/img45/8224/dsc023998gh.jpg</a>

For those who wonder...............................why is this an issue? When you are installing a FF tube that extends past your low profile gas block, you have to be able to install the gas tube and gas block first, then slide the tube over the installed gas block for final assembly. If your gas block is too tall/wide/whatever, you won't be able to install the tube, especially in the case of LaRue tubes.



Oh, and BTW, the LaRue tube is "oval" in the purest sense of the word, just not as "oval" as the DD. The LaRue is taller than it is wide..............not by much and not as much as the DD, but it is.


Will a shaved FSB fit under a DD rail?



If shaved enough.................yes.
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