Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Are these also night sights? Do they glow well?
Document: I am mid 60's, eyes not so great. I started using these sights on my issue sidearm during the last couple years of my career. I found that while it takes some time to master the sight picture for distance, 15 yards and beyond, they work very well up close, where most defensive handgun fights occur. This is especially true in dim light situations.Night sights work very well in almost complete darkness, glow brightly and allow a great sight picture. The problem is that when it&#8217;s that dark one can&#8217;t see the threat well enough to determine that deadly force is justified and acceptable.Ambient lighting, flashing emergency lights, even a flashlight beam illuminate the threat but wash out the night sights.With the XS Big Dot you have this pumpkin sitting on the end of the barrel, if it&#8217;s good and dark the pumpkin glows.
this sight was awesome and just as advertised by many of its supporters. Easy to install also with little to no experience, just find a you tube video n you can do it in 20 mins. These sights a quick and easy to pick up with quick acquisition of targets are needed. Can't go wrong with a set of XS Big Dot night sights on your carry gun!
3 round "failure to stop" drills at 5 yards happen almost as fast as I can pull the trigger. I can also group shots at 25 yards with the Big Dot as well as I could with the stock sight. The Tritium is very bright and visible in no/low light situations. The sights seem to be well made. I had them installed by my local gunsmith.
The big surprise was the first night I picked up my gun, because I hear some coyotes out at the chicken pen. That front post might as well been a spot light. It was amazing how easy it was to see and it was so dark you could not see 3 feet in front of you without a light. Now,, they are not good for target shooting, because you need a very thin blade front sight to shoot high scores, but that was never there intended use.
The Big dot is a great sight; does sit a little higher than the stock 3 dot. Very easy to find and get on target. Note the back sight does not &#34;glow&#34;, if it did these sights would be over the top! !Do recommend
I like the sights. No problem with Kydex holsters, but the slightly higher profile with the front sight seems to be a problem for almost all my leather holsters. Installing & removing weapon gathers leather filings on front sight just enough where it might block the tritium glow. Have to clean it off when removed from holster, good thing is that over time it might create a permanent groove in the leather. It doesn't seem to hurt the sight at all.
I waited way to long to buy these sights! PERFECT carry gun sights! Large and Fast. Well built and required minimal fitting. I have this set on 2 autoloaders and have put on 2my of my revolvers.
The only reason i did not give thiis sight 5 stars is the lack of illumination on the rear sight, which truthfully may be not very practical anyway. The big dot stands out well into extermly low light, but gets a little confusing in total darkness. The fact is these sights do what there supposed to, incredibly fast target acuisition, and superior accurracy, from the increased field of view over the rear sight. Thats what its about in self protection. They were easy to insall, watch the video on you tube, follow the included instructions, and of course some final adjustment at the range.
If lights are flashing or simply to bright to let the night sight elements show you just put the pumpkin on the threat and press as needed.I&#8217;ve installed Big Dots on a number of older officer&#8217;s weapons where they have allowed the guys to hit better in daylight and dim light qualifications.I put them on any handgun I might carry if they are obtainable.
These sites are really nice. Quick to line up and the tritium works well. The old sites were a pain to get off and these were a pain to get on but thats just how things are when it comes to replacing sites.
Answer: yes