Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: will whis laser work on the new glock 42?
Document: This is my second laser sight. The first went on a Glock 19, and the second went on my new Glock 30S. I love the sights, you can use a regular holster and turn on the laser or not.
I put it on my glock, went to the range, fired 1 magazine through it, and it stopped working. I replaced the batteries, and no luck, still would not work.
This laser is exactly as described. Very easy to install, simply tap off your old site with a hammer and center punch and slide the new laser into place. What a great product.
This is a rear sight laser device for semi-auto handguns. It is best to use the specialized tool to remove the old, and install the new. Very durable. you will need the specific round size laser bullet to align the rear sight with the center barrel before taking it to the range to "zero" your handgun. Not for the novice. Great product and fast delivery.
I purchased mine from this site i.e. amazon.com back in March 2013 and have used it once at the shooting range and never work again since then. I google "laserlyte rear sight laser issues" and have found that there are a lot of people who have had and are still having problem with this product. It was a good idea to buy this laser sight. but it is not worth the money or the headache that comes with it.
My RL-1 stopped functioning after thousands of rounds and a few years of time. The customer service was very polite and replaced my unit with a brand new upgraded model like this  completely FREE OF CHARGE !! . The unit is great and passes the 25 meter daytime test. You can have a laser without dealing with buying special holsters made for a specific gun and laser system.
This product is mediocre. The battery dies every five minutes (not literally every five minutes; but I put new batteries in, and they are dead before I ever turn the laser on). I am not sure if there is a poor circuit in it or if the wind is able to push the button on, but I was excited to purchase it, and even more excited to replace it with something different.Moreover, the laser is only accurate at one distance.
This laser is an excellent replacement for the rear sight on my Glock 27. It is really helpful in target acquisition on a compact handgun.
This was one of my best decisions for a laser for my Glock 19. Easy install and I like that I can turn it on or off as conditions change.
I can't sight the laser in.............Everytime I shoot my Glock 30 (after one shot) the Laser turns off..................Waste of $$$$$$$$$. Look somewhere else..........
Answer: yes