Replacing Tritium on Black Ring Sight

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M1P90
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Replacing Tritium on Black Ring Sight

Post by M1P90 » 19 Jan 2015, 11:05

This is a step by step procedure on how to replace the tritium on the Black Ring Sight. This particular Sight had a broken tritium so there were lots of broken glass.

Use a heat gun to soften the rubber surrounding the tritium. Then use pliers or tweezers to pull loose the rubber. I started out using an exacto knife to cut out pieces of the rubber and to remove broken glass. I Accidentally put a small scratch on the upper part of the viewing plate. Luckily you don't see it under normal viewing. The Original Tritium looks like a FLAT 1.5mm x 4mm x 10mm. (I couldn't find one this size to replace)
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I looked around and the closest thing I could find was a ROUND 3mm x 11mm red tritium on e-bay. (I later found a 1.5x3x6mm green one on etsy)
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Here is the exposed viewing plate. Notice how the black reticle is upside down. I guess it reflects off a mirror so it flips to your eye.
I also noticed that the black reticle circle wasn't exactly in the middle of the Ring sight. Don't know why that is.
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A FLAT Tritium would have worked best and a lot easier to work with. Here is the ROUND tritium covering the T bar of the reticle.
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I put a small amount of silicon to hold the tritium in place. After it dried I tested to see if the T bar glowed normally in the dark. YEP!
Then I tested a REM LED on it to see if it glowed correctly. YEP! Everything is working fine.
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Be careful here. Since the tritium is round make sure you DO NOT push the silicone around and behind the tritium. It WILL block the light from getting to the T Bar.(It would have been better to use a CLEAR silicone instead of a white.) If you are just replacing the tritium lightly cover the rest of the tritium and area to seal it. I wanted to install the REM T3b to I left a little tritium exposed.
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I installed the T3B and covered the rest of the area with black epoxy that cures hard. After it dried I turned on the REM on all 11 settings to see how the T bar glowed. perfect!
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PEACE THROUGH STRENGTH
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