Used this to get my red dot close and it worked perfectly. I used it in the evening so it was super bright but you can for sure use it during the day. Usage was easy

Einwandfreie Ware und Lieferung

This bore-sight laser works fine my application. I purchased this to get the barrel and red dot in the same neighborhood before going to the range. I first tried it in full daylight in my backyard, but could not see the laser past 20 yards, but I'm sure at dusk it would be visible at that distance and more, but I did not really want to try it again and risk freaking out the neighbors, so I ended up sighting the rifle at 10 yards inside my house and that would be good enough to land on target at 50 yards as I always do a 50/200. If you're looking to replicate the laser in movies that paint a perfect circle at 200 yards in someone's forehead, this is not the one.Update 10/12/24. I originally used this laser for maybe one hour while sighting a rifle and while it worked fine I put the batteries back today to sight another rifle, but the batteries were dead. I don't consider this that big of a problem as I don't need to use this laser that often, but I'm just letting others know that batteries don't last that long. I'm still keeping the 4 stars.

The process is easy. Taking the device apart each time to remove the batteries is a bit of a pain but for the few times I need it I guess it's acceptable. Not sure the perfection in accuracy. The firearm I used it on first still hit several inches to the left at 100 yards and I was dead on with the dot at 25 yards. Elevation was near perfect so not sure why it was off to the left.

Schlechte Verarbeitung macht den sachgemäßen Einsatz leider unmöglich. Die Patrone ist zu klein und wackelt im Lauf. Der Laser kommt nicht gerade raus und die Einstellschrauben sind selbst mit spezial Feinschraubenwerkzeug nicht bedienbar.

Bin voll zufrieden

produkt ist nicht schlecht, halbwegs vorjustiert kann damit durchaus werden,feinabstimmung geht natürlich dann erst am schießstand.trotzdem gibts einige mängel.... mein repetierer konnte diese patrone nicht einfach so zuführen,da mußte ich manuel immer etwas nachhelfen. auch kann das ding weder ein noch ausgeschalten werden,sobald batterien drinnen sind ( eigentlich bereits beim zudrehen des verschlusses ) ist laser aktiv... wenn ich die patrone wieder auswerfen ließ hab ich vorsichtshalberimmer augen weggedreht damit ich den laser nicht in die augen bekommen.

I own several different laser bore sights by Sightmark, in a number of different calibers. I also have one of their universal laser bore sights. I've found all of their products to work quite well so far.I've found these in the chamber type of laser bore sights to work much better than the universal types which hang out from the muzzle. The machining on these in the chamber types by Sightmark is quite good. With the firearm firmly mounted in a heavy bench rest, I've rotated the sight to several positions in the chamber and seen very little change in the point of the dot even at 100 yards, which indcated to me not only a very good machining but also a very good adjustment of the laser within the brass body.One thing to bear in mind with these sights are that while they do feature a rim like a standard cartridge, the sight is not meant to be removed from the chamber by means of the extractor and bolt. While you will get best results by gently letting the bolt close and push the sight snugly into the chamber, the sight will not simply fall out upon opening the bolt and again, it is not meant to be extracted like a standard cartridge. to remove it is best to open the bolt and keep it open while using a cleaning rod from the muzzle end to gently push the sight out from the chamber.Another thing to bear in mind is that none of these types of sights are perfect. They will do a little better than just getting you on paper, but you will still have to go through the usual steps of zeroing your sights or scope. Consider the distance that you are looking to have as the zero. Even though it is a laser, the diameter of the dot will increase over distance as will any very slight variation from true bore line center. Getting on paper and close to target center at 100 yards with such a device is still doing quite well. At 25 to 50 yards though these devices are outstanding. Be aware too though that even with a powerful spotting scope, it will not be easy to see the red laser dot in full daylight at distances beyond 25 yards. It's best to use the sight in lower light conditions.Factory ammo will also give considerable variation in points of impact. The amount of time and ammunition saved by using one of these sights makes them well worth using.The only two things about these sights that I could see as an improvement, would be some sort of switch rather than having to remove the batteries, and having a green laser instead of red. Given the infrequent need to use the sight however, makes the lack of switch and the need to remove the batteries an extremely small complaint. With current technologies in batteries and lasers having a green laser in such a small package is very unlikely and the cost would be considerably higher.

I have four of the Sightmark laser boresights - the 12 gauge, 9mm, 7.62x39mm, and .223.I had used a Bushnell laser boresight before getting this set of chamber loaded laser boresights. The Bushnell is the kind that you stick into the muzzle end of the gun, fitted with an arbor matched to the barrel size. The problem with this device was that the arbors never fit quite right - they were always either too tight or too loose, plus you had to try to seat the body of the boresight in the center of the opening of the barrel (or muzzle brake) in order to properly align the center axis of the boresight with the center axis of the barrel. This rarely if ever happened just right as the slightest tilt in the seating of this boresight in the barrel would take it off the center axis so that rotating the laser would cause the laser light to mark out a small circle that was several MOA in diameter rather than being dead centered. Ugh.Of course with these chamber loaded laser boresights, there is also the potential for the lasers to be mis-aligned off the center axis. Plus there is the potential for the boresight to not fit the chamber properly. The key is to find a brand that has a measure of quality control so that you aren't stuck with these problems.I read through a lot of reviews before deciding on Sightmark. It is definitely not the cheapest out there. There are so many different brands and generic versions of these chamber loaded laser boresights now that almost look alike, with many much cheaper than the Sightmark. However, it was clear from reading the reviews that as the prices went down, so did the quality control. Several of these cheaper brands came with complaints that the lasers were not aligned to the center axis (resulting in the laser painting a circle as it rotates in the chamber) or that they did not fit properly in the chambers and so would either get stuck or wiggle.I have this theory that the really cheap laser boresights must be factory seconds or some such.I considered the Osprey line with the adjustable arbors, which saves money by allowing you to use one laser bore sight for different calibers. But, the reviews indicated that hassling with arbors would have an effect on accuracy and reliability.I almost got the Firefield, which seemed to have a similar number of decent reviews. Ultimately I decided against it because the entire line is made of an aluminum shell, and I think the brass shell of the Sightmark will hold up better.It should be noted, however, that the 12 gauge Sitemark is made out of aluminum, unlike the others, and is only painted a brass color.The biggest complaint against all of these laser boresighters are the frequent DOA batteries and poor battery life. The Sightmarks all come with alkaline button cell batteries. The small caliber ones (9mm, 7.62mm, .223) come with two AG5 batteries while the 12 gauge came with three AG13 (LR44) batteries.To get you all confused, the printed information on the back of the packaging for the 7.62mm and .223 says you can use 3 AG3 batteries in place of the 2 AG5 batteries (since the AG3 is a thinner battery with the same 7.9mm diameter), while the printed info for the 12 gauge says you can use 2 AG5 or 3 AG13 batteries. This is flat out incorrect since 2 AG5 batteries are too small to fit into the 12 gauge Sightmark battery chamber.Confused? Go to wikipedia and look up the article "List of battery sizes". Scroll down to the section titled "Silver oxide and alkaline cells". The table lists all the different names for each battery, their dimensions, and their mAh power rating. Note how the silver oxide batteries contain 1-1/2 to two times as much energy as the alkaline batteries.So the key is to go out and get some silver oxide button batteries, size SG5 for the AG5 powered Sightmarks and SG13 for the AG13 powered lasers. And don't go to your nearest retail store, since that will cost you an arm and a leg. Google shop for these batteries online. I found two Made in China "brands" one called Vinnic and another by Chung Pak Battery Works which were pretty cheap. The names aren't important, since I'm sure they will change rapidly. Just remember to get some silver oxide batteries online at the same time you are getting these Sightmark bore sights.How well did these Sightmarks work? The very first time I used one (the 7.62x39mm), I plugged in the included AG5 alkaline batteries and the resulting laser light was exceedingly weak. My initial reaction was that this was a bad laser. Then I remembered the silver oxide batteries I had gotten. When I switched out the batteries, the laser suddenly glowed brightly. Later, when this set of silver batteries finally wore down, the laser light faded again. That's a sign to change batteries.The larger AG13 alkaline batteries for the 12gauge shotgun boresight worked reasonably well and are still working as of this writing. Not surprising, since these batteries pack a lot more energy than the small AG5 batteries.As many have noted, the Sightmarks do not have an on-off switch. Once the batteries are screwed in the laser light is on! This is just as well, since the bore sights have to flush fit inside the chamber of the barrel and endure having the bolt and firing pin slammed into them. But you do have to have a plan of action ready so as to not run down your batteries. With one pair of SG5 silver oxide batteries, I was able to adjust the sights for about four guns, each taking about 5-10 minutes. So I am guesstimating a battery life of about 30 minutes with a fresh pair of SG5 silver batteries (the Sightmark packaging claims up to an hour of battery life - hah!).All of the Sightmarks have fit in well, none have gotten stuck (so far), and none have had off-center lasers.These chamber loaded Sightmark boresighters make it easy to dial in a scope, and for fixed sights, they help confirm the aim points. They are much better than the muzzle loaded bore sights, although the total cost is a lot more since they are ammo caliber specific.