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Posted: 9/16/2009 12:32:01 PM EST
[Last Edit: 9/16/2009 12:32:28 PM EST by whiskey]
I'm looking at the Doughnut of Death model (.308).
How durable is the FO.
If the FO breaks, can you still see the doughnut?
Is it tritium?
Will it no longer be visible if the tritium burns out?

Link Posted: 9/16/2009 12:46:55 PM EST
fiber optic makes it glow from sunlight but the black shape will still be there regardless of the FO tube
Tritium lights the reticle at night but again even when it burns out the black will stil lshow
Link Posted: 9/16/2009 4:38:13 PM EST
So, if the FO Tube were to be removed, the doughnut would still be there, but black and not red correct.
Essentially like the TA 01 NSN's reticule?

Link Posted: 9/16/2009 4:42:55 PM EST
[Last Edit: 9/16/2009 4:43:20 PM EST by Duffy]
It'll still glow red from the tritium in low light. Without the fiber optics tube, it'll be a black circle during the day.
Link Posted: 9/16/2009 5:33:57 PM EST
Like they said, it'll still be there black. But good luck breaking the fiber optic. ACOGs are built like tanks.
Link Posted: 9/17/2009 4:25:02 AM EST
The fiber optic is coated in Lexan and protected by aluminum wings integral with the ACOG's housing. I don't think you'll break the fiber optic.
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