Changing front sight

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inletguy
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Changing front sight

Post by inletguy » Sun Jan 13, 2019 3:30 pm

Had gun smith change the optical red front that came on my new SFX to the green supplied. The green dot is not as large as the red one was. gun smith said you have to melt the new sight in, and there is no guarantee it will be same size...anyone have any thoughts on this?
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runeight
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Re: Changing front sight

Post by runeight » Sun Jan 13, 2019 4:00 pm

I can’t image two different sizes. I would lean towards what the eye sees and color perception. Also, you only need to melt one end as the other should be flared.

In the future changing the FO rods are one of the easiest things you can do. Plenty of vids, best being Dawson Sights.

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runeight
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Re: Changing front sight

Post by runeight » Sun Jan 13, 2019 4:13 pm

Also wanted to add that if the GS melted the wrong end it will not be as bright to your eye. The flared end goes towards the hammer. (Or you)

The end on the muzzle gets melted. (Ever so slightly, just enough to hold FO)
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Re: Changing front sight

Post by GlennSFX » Sun Jan 13, 2019 4:21 pm

How you melt the fiber has a direct affect on the size of the "dot/sight".

When I changed mine to green to 1/3 co-witness with my red dot, I first melted one end of the fiber optic rod with a lighter. Make sure you move the flame close to it, without touching it with the flame, to form the bulb. Then insert it into the sight from the rear, and cut it so it sticks out beyond the end of the sight. Then melt it as you did the other end. If you want a larger dot, make a larger bulb on the rearward side facing you.

I kept the bulbs small to minimize the impact of it in the sight picture sitting below the red dot. For me, I didn't like having the two coexisting. I removed it and used the front sight as a black sight.
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LT USN (Ret.)
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Re: Changing front sight

Post by LT USN (Ret.) » Sun Jan 13, 2019 4:23 pm

runeight wrote:
Sun Jan 13, 2019 4:13 pm
The end on the muzzle gets melted. (Ever so slightly, just enough to hold FO)
Yeah, I discovered this one today. Now I need some new green FO. :-S
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runeight
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Re: Changing front sight

Post by runeight » Sun Jan 13, 2019 4:33 pm

GlennSFX wrote:
Sun Jan 13, 2019 4:21 pm
How you melt the fiber has a direct affect on the size of the "dot/sight".

When I changed mine to green to 1/3 co-witness with my red dot, I first melted one end of the fiber optic rod with a lighter. Make sure you move the flame close to it, without touching it with the flame, to form the bulb. Then insert it into the sight from the rear, and cut it so it sticks out beyond the end of the sight. Then melt it as you did the other end. If you want a larger dot, make a larger bulb on the rearward side facing you.

I kept the bulbs small to minimize the impact of it in the sight picture sitting below the red dot. For me, I didn't like having the two coexisting. I removed it and used the front sight as a black sight.
So your saying you didn’t have a bulb end already?
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runeight
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Re: Changing front sight

Post by runeight » Sun Jan 13, 2019 4:35 pm

LT USN (Ret.) wrote:
Sun Jan 13, 2019 4:23 pm
runeight wrote:
Sun Jan 13, 2019 4:13 pm
The end on the muzzle gets melted. (Ever so slightly, just enough to hold FO)
Yeah, I discovered this one today. Now I need some new green FO. :-S
:-D

Easy mistake, easy fix.
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Re: Changing front sight

Post by GlennSFX » Sun Jan 13, 2019 7:38 pm

runeight wrote:
Sun Jan 13, 2019 4:33 pm
So your saying you didn’t have a bulb end already?
Correct...just a couple pieces of rod.
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Re: Changing front sight

Post by runeight » Sun Jan 13, 2019 8:15 pm

GlennSFX wrote:
Sun Jan 13, 2019 7:38 pm
runeight wrote:
Sun Jan 13, 2019 4:33 pm
So your saying you didn’t have a bulb end already?
Correct...just a couple pieces of rod.
That would dim it down some.
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inletguy
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Re: Changing front sight

Post by inletguy » Sun Jan 13, 2019 8:48 pm

thought I just posted this, but don't see it...Scott Warren with Warren Tactical Sights emailed me to heat the FRONT of the new rod to increase size of dot
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Re: Changing front sight

Post by runeight » Sun Jan 13, 2019 9:17 pm

Front? You don’t see the front when aiming.

FO works on one principle. Light. The brighter the light the better the sight. Think inside versus outside.
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inletguy
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Re: Changing front sight

Post by inletguy » Sun Jan 13, 2019 10:00 pm

so, you are saying to "overheat" the rear end of the rod....correct?
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Re: Changing front sight

Post by GlennSFX » Mon Jan 14, 2019 4:50 am

inletguy wrote:
Sun Jan 13, 2019 10:00 pm
so, you are saying to "overheat" the rear end of the rod....correct?
You want to "enlarge" the end that's facing you as you look through the rear sight. That's the end your eye sees.
Typically that is the end that you'd melt before you install it in the sight. Seeing it's already installed you could achieve the same effect using a soldering iron.

Here I took the new spare red rod that is supplied with the gun. Just hold it and "tap" the end of it with the soldering iron. This will "flatten" the end enlarging it.

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Re: Changing front sight

Post by runeight » Mon Jan 14, 2019 4:52 am

inletguy wrote:
Sun Jan 13, 2019 10:00 pm
so, you are saying to "overheat" the rear end of the rod....correct?
If the FO has a bulb slip in from the back seating inside the sight post recess.

If no bulb heat one end and slightly make a bulb, slip into sight post recess from the back.

Score the front FO about 1/16 th of an inch, snap off.

Slightly heat the front of the FO to make another bulb. Check for play, should be snug.

After doing some reading some FO rods are not flared as I assumed they were. Sorry for that confusion. Very easy to swap FO rods for color changes.
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Re: Changing front sight

Post by runeight » Mon Jan 14, 2019 6:08 am

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Re: Changing front sight

Post by LT USN (Ret.) » Thu Jan 17, 2019 5:03 am

Anybody know what size fiber fits an SFx?
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Re: Changing front sight

Post by runeight » Thu Jan 17, 2019 3:58 pm

LT USN (Ret.) wrote:
Thu Jan 17, 2019 5:03 am
Anybody know what size fiber fits an SFx?
Someone needs to mic it for you.
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