450 gas block?

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450 gas block?

Postby monty732 » Thu May 26, 2011 11:31 am

Is there a receiver height gas block available for the 450?I have a set of Troy BUIS I want to run but they are same plane style.
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Re: 450 gas block?

Postby Texas Sheepdawg » Sun May 29, 2011 4:42 pm

You would need a gas block that will match the barrel of a 450 B and I don't recall that dimension. Can someone please enlighten us? I was interested in swapping that fake gas block on my 20" for a BUIS. So we need dimensions for both the 16" and 20".
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Re: 450 gas block?

Postby KY_Mike » Mon May 30, 2011 2:59 pm

O.D. for the barrel under the gas block on either barrel is .750 (thanks wildcatter.) I looked long and hard for a receiver height gas block to use a set of Troy Battlesights that I already had and came up short. I ended up milling off the top of a regular picatinny gas block and measuring, then milling a piece of extruded picatinny blank stock to size and using set screws/loctite to secure it. (This only worked for the fake gas block on my 20", since I cut into the gas tube area on the donor block.)

You may be better off to look into getting a quadrail to extend over a low profile gas block or just selling your receiver height Troy front sight and buying a gas block height sight to match your rear sight. I've considered both for my 16".
Last edited by KY_Mike on Tue May 31, 2011 4:08 pm, edited 1 time in total.
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Re: 450 gas block?

Postby BillytheKid » Mon May 30, 2011 3:39 pm

Take a look at the Advantage Guardian BUIS

I've been thinking long and hard about getting that myself.
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Re: 450 gas block?

Postby monty732 » Mon May 30, 2011 4:21 pm

Yeah,I'm thinking railed hg is the way to go.
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Re: 450 gas block?

Postby BillytheKid » Mon May 30, 2011 6:56 pm

BillytheKid wrote:Take a look at the Advantage Guardian BUIS

I've been thinking long and hard about getting that myself.


Actually, I just "pulled the trigger" and ordered it from Midway.

Ill have to take some video once I figure out how to mount it on my Thumper.
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Re: 450 gas block?

Postby wildcatter » Mon May 30, 2011 9:03 pm

Nope, nope, nope, the barrel at the gas block for the 450b is .750"..

..t
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Re: 450 gas block?

Postby monty732 » Tue May 31, 2011 8:06 am

Thanks wildcatter.The MI one will work then.
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Re: 450 gas block?

Postby KY_Mike » Tue May 31, 2011 4:07 pm

wildcatter wrote:Nope, nope, nope, the barrel at the gas block for the 450b is .750"..

..t


Woops! My mistake. Been a while since I measured mine. I'll go back and edit my previous size so it doesn't trip anyone up.
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