Low profile GB on DD barrel

APD201 · #1 01-29-10, 23:43

I want to put a LaRue rail on a DD non CHF barrel, anyone done this? The barrel has one dimple on the underside.
What GB do you recommend?
Thanks

Robb Jensen · #2 01-29-10, 23:48

Quote:

Originally Posted by APD201

I want to put a LaRue rail on a DD non CHF barrel, anyone done this? The barrel has one dimple on the underside.
What GB do you recommend?
Thanks

99% of the time the dimple is 180 degrees opposite of the gas port.

A LaRue or VLTOR gas block is what I would suggest.

APD201 · #3 01-29-10, 23:50

Quote:

Originally Posted by gotm4

99% of the time the dimple is 180 degrees opposite of the gas port.

A LaRue or VLTOR gas block is what I would suggest.

I was thinking of those but dont they have two set screws? I dont want to send the barrel off.

Robb Jensen · #4 01-30-10, 00:02

Quote:

Originally Posted by APD201

I was thinking of those but dont they have two set screws? I dont want to send the barrel off.

LaRues have three screws and factory VLTOR gas blocks have two.

Col_Crocs · #5 01-30-10, 00:05

You have quite a bit to choose from. First Id make sure it would fit under the rail -- which I think most low pro's would. Then choose one that uses set screws from the bottom to mount onto the dimple. Personally, Id get it pinned on top of that. Not that big an issue if not even atleast partially exposed though I think. -- I could be wrong.
As for brands you have the better known and I suppose old reliable ones like Vltor, KAC, and well... Larue.

APD201 · #6 01-30-10, 00:08

Quote:

Originally Posted by gotm4

LaRues have three screws and factory VLTOR gas blocks have two.

How do I get past the hurtle of only one dimple in the barrel?

Robb Jensen · #7 01-30-10, 00:11

Quote:

Originally Posted by APD201

How do I get past the hurtle of only one dimple in the barrel?

Just Rocksett both screws. If you get the chance pin the gas block.

Col_Crocs · #8 01-30-10, 00:13

You dont have to send it off IMHO... Once youve mounted the rear set screw on the dimple and verified that gas port alignment is GTG, you can use the hole for the front screw as a guide to drill your own dimple for it.

APD201 · #9 01-30-10, 00:19

Quote:

Originally Posted by gotm4

Just Rocksett both screws. If you get the chance pin the gas block.

What does "Rocksett" mean?

Thanks

mark5pt56 · #10 01-30-10, 02:48

I used Vltor's on my BCM's and a trip to ADCO for pinning.

thopkins22 · #11 01-30-10, 03:57

Quote:

Originally Posted by APD201

What does "Rocksett" mean?

Thanks

Rocksett is a product that's like high temperature, crazy strong Loctite.

http://store.flexbar.com/merchant2/m...dhesive-Cement