I've had my P365 SAS for a few months now. When I took it out of the box, the sight was very bright. I've put a few hundred rounds through it with no Issues (<1000). The gun performs very well. I have noticed that since my last visit to the range the sight seems more dim. Has anyone had this experience? I'm worried the cleaner I used might have gotten down the sides of the sight and affected how it retrieves the light..or something. I don't want to take out the bullseye sight unless I have to because it's very accurate at the moment.

When I first got the gun, I took a picture of the bullseye at a certain place/lighting in my office. When I go to that same place with the same lighting, the bullseye is definitely not as bright. I'm not sure if it's due to the shooting or cleaning.

You should call SIG, have them send you a prepaid shipping label, and replace the sight under the warranty.

Don’t call them on Monday morning or Friday afternoon. Those are busy times. Good luck.

quote:

Originally posted by 2Adefender:
You should call SIG, have them send you a prepaid shipping label, and replace the sight under the warranty.

Don’t call them on Monday morning or Friday afternoon. Those are busy times. Good luck.

Thanks for the reply. I was hoping I wouldn't need to send it back. I really like carrying this gun. I will get in touch with Sig.

It can happen to any tritium sight; Sig will take care of it. You’ll only need to ship them the slide and they’ll make it right. Call them and you’ll get an emailed RMA within minutes.

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Originally posted by gearhounds:
It can happen to any tritium sight; Sig will take care of it. You’ll only need to ship them the slide and they’ll make it right. Call them and you’ll get an emailed RMA within minutes.

For my own knowledge, when they fail, do they usually fail early? What is the actual cause?

I know they can get covered in burnt powder residue but that gets remedied with a dry cloth rub normally. I don't put solvent or oil on them.

quote:

Originally posted by sigfreund:
Because of how night sight “lamps” are constructed, I can’t think of a way for a failure of the lamp itself to cause the light to become dimmer. If the tritium leaked out, it should be dead, not dimmer. That leads me to suspect a couple of possibilities.

The first is that whatever cleaner or perhaps oil you allowed to get on the lamp window has darkened and is interfering with the light transmission. Otherwise, I would question whether you’re viewing the lamp under the same conditions. If your eyes were more fully adapted to the dark one time than another, that will definitely affect your perception of the lamp’s brightness.

I used Break Free CLP. I didn't put too much on the sight, besides just wiping the excess from cleaning the other parts. I have a picture that I took when I first got the gun, and under the same lighting its definitely more dim. I have been debating removing the sight and cleaning the sight pieces better with lens cleaner or something (and getting more of the sides that are recessed in the slide. The downside to that is trying to get it aligned when putting it back together.

quote:

Originally posted by sigfreund:
Because of how night sight “lamps” are constructed, I can’t think of a way for a failure of the lamp itself to cause the light to become dimmer. If the tritium leaked out, it should be dead, not dimmer. That leads me to suspect a couple of possibilities.

The first is that whatever cleaner or perhaps oil you allowed to get on the lamp window has darkened and is interfering with the light transmission. Otherwise, I would question whether you’re viewing the lamp under the same conditions. If your eyes were more fully adapted to the dark one time than another, that will definitely affect your perception of the lamp’s brightness.

I had the exact problem with my 365’s front sight. I attributed it to a “slow leak” rather than sudden catastrophic lamp failure. The gun was about a year old and the front lamp was just one day less than half as bright- seemed to stay the same for the couple of weeks until I could get around to shipping it off. No physical trauma led up to it, it just started occurring on its own.

quote:

Originally posted by sigfreund:
...I’m confused about what you would be trying to do if you removed the sight, but cleaning the bottom or sides won’t have any effect on the night sight lamp. The lamps are usually tiny aluminum capsules with a transparent cap at the back end to allow the visible light to be seen.

Thanks for the replies and help. From looking at the bullseye sight on the internet, it looks like there is a decent amount of light gathering surface area on the sides, that I can’t get to without removing the sight. I wasn’t sure how the reflected light entered the sight, and if that mattered at all. I agree, It doesn’t make a ton of sense and I’m grasping at straws. I’ll touch base with Sig, and update the post if I learn anything.

Sorry, please disregard everything I posted earlier. I was oblivious to the fact that you were referring to the SAS sight which I have only seen in pictures, not the usual night sights used on SIG pistols.

I'll delete my inapplicable posts.

quote:

Originally posted by sigfreund:
Sorry, please disregard everything I posted earlier. I was oblivious to the fact that you were referring to the SAS sight which I have only seen in pictures, not the usual night sights used on SIG pistols.

I'll delete my inapplicable posts.

No problem. I appreciate the support regardless.

So, I'm confused (nothing new about that):

Are these 365 sites tritium or some type of fiber optic light gathering thing ?

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Originally posted by SBrooks:
So, I'm confused (nothing new about that):

Are these 365 sites tritium or some type of fiber optic light gathering thing ?

The P365 SAS have both. This pistol employs the Mepro FT Bullseye sight.

https://www.themakogroup.com/ftbullseye.html

The regular P365 has tridium front sights.

Mine lasted three months. They replaced them. Second set lasted six months. Replaced them and I sold the gun.

quote:

Originally posted by AZ Husker:
Mine lasted three months. They replaced them. Second set lasted six months. Replaced them and I sold the gun.

Ugh...You've got to be kidding. This is the FT bullseye? Did they have any explanation for the loss? Is it from shooting?... or leakage of tridium?

These were on an SAS model. I loved the sights once I got used to looking inside the slide. But they got dim way too fast. Reading other forums this is a common problem. I loved the little gun so much I bought another P365 without night sights.

Makes no sense that tritium sites would go dim in just a few months. Seems like a leak would be bright one day and nothing the next. After all, it's a gas - it isn't going to leak a drip at a time. And all the tritium sites I've seen and heard about last years and years before needing replacement. Unless these sat on a shelf for 5 or 10 years before being installed (which would be weird - especially if it happened twice in a row).

Just a follow-up. I returned my slide to Sig and they replaced the sight. It is now again much brighter (like it was when new). I'm thinking this has to do with the CLP cleaning solution I was using. As mentioned, I could have wiped some on the slide and over the optic glass.

Does anyone have any recommended cleaning/lubricating solution that is acceptable with optics?

Another follow-up. I was able to contact Metrolight, and they Recommended to keep oil off of the light collection plate. I have not been using the earlier CLP for cleaning and have been using Sig’s Spec1 lubricant. No issues thus far after multiple trips to the range.

Sig cCS told me to take off the sight and clean under it. I did and it worked. Ppl