ADAFAZ Red/Green Bore Sight Kit Boresighters Automatically Adjust Focus for .177 to .50 Caliber Pistols Rifles (3rd Version)

A. Powerful Green "Real" Laser Device:Yes, tested as real coherent light (essentially same size at distance.) that works easily @ 200ft. at noon and about a 1000ft. in the dark. Better than the $300+ green laser that I have on my GLOCK 19, in fact!B. Works "Perfectly" if Directions are Followed: The critical instructions that are admittedly not super clear are:1.) Use light silicone lube in the barrel and on rubber insert.2.) Use the rubber insert that is just smaller than barrel and then tighten the tiny screw (Could be a couple millimeters longer!) just to the point where the rubber insert enters the barrel slightly smug.3.) Be sure to push the insert all the way in and then rotate it while watching the laser at least an 100-200 foot distance.4.) If the image rotates/out-of-round any amount, tighten the screw an additional small amount (~1/12 of a rotation/Like 1:00 to 2:00). Then repeat these steps.5.) In little time my GLOCK 19, .22 Ruger Bull Nose, and Umarex 22. 850 M2 demonstrated no perceptible rotation. (I used rifle scope on the Umarex to see potential rotations @ 200feet.)Note: This is my third device; both of the others were far more expensive.This is one of the few things I have that performs at the 100% level every time.Doesn't get any better than this.7/19/2020: Updated observation: I am adding that the centering of this device can be problematic if it is not inserted into barrel all the way. I cannot figure out why; but, there is a tendency for it to pop out 1/8" - 1/4" or so in my rifle. When this happens it will not be centered in my barrel. Keep checking for this until completion.

UPDATE 11/15/19Well, turns out some of the reviews I'd read previously that had originally scared me, before I bought, were true after all. So your "Milage May Vary".And I'm a super careful person who had read all the instructions (I'd even given it an initial good review that I left further below). When I say careful, I'm a Level III Tech that works with very small parts requiring a Jewelers Visor.So anyway, I got my Umarex Synergis Rifle .177 and Umarex Trevox Pistol today. And none of the adapters worked. The tinny lil' screws became VERY finicky...and the craziest thing...they would NOT unscrew...and then one adapter slipped off and was stuck in the gun. It looks like the screws metal is a lil' too soft. So I'm sorry to say this is going to be returned.PREVIOUS OLDER REVIEWI'd read all the reviews before deciding to buy anyway...and honestly they had kind of scared me. However, once it came, I was pleasantly surprised as it seems to be quality.So, I'm not sure if there is some confusion between other buyers? As, I also saw there are three (3) different versions of this Bore Sight. The one I ordered was call the "3rd Version".What I've Observed So Far:1) The battery orientation that some complained about, or that I saw in video review...on this version, it is clearly printed directly on the Bore Sight itself.2) The CR2 battery that came with mine...was at 60% right out of the box. I tested it with my very accurate ZTS Pulse Load Tester.3) I could potentially see how perhaps some people (who might be a lil' harder on things or do not read instructions). People like some in-laws I know, who just slam things. ;-) Perhaps cranking down on a very fine precision screw (like what is need for the .177 caliber adapter).Now are the instructions perfect? NOIt would have been nice if the adapters were somehow better labeled. But if a person has common sense...it did make sense to me which way to attached the various adapters. Plus, like how the instructions say, the tighter a person tightens the screw...it will make the adapter "bulge out" a lil'. Which will then make the adapter tighter. So again, I could see some people just jamming an adapter down the barrel of the firearm and then wonder why it would get stuck down there.

After purchasing a $15 dollar ammo cartridge style bore sight laser that would not aim down the barrel of any of my weapons worth a damn, I did more research on Amazon and found this Adafaz bore sight laser and decided to give it a try.This product appears to be well crafted and sturdy. It allowed me to easily sight in the red dot of my Ruger PC Carbine against the green laser beam, which had me on bullseye at 17 and 24 yds in a matter of minutes. I read complaints of other brands that reported flimsy stalks that would bend when installing and removing it, but this is not the case with this product. By using a little extra care tightening the set screw of the small rubber barrel bushing and applying a dab of oil, it helped the bushing to snugly glide into position and was easily removed.If you're considering purchasing the bullet cartridge style laser, I recommend you get this Adafaz product instead. This bore sight laser performed exactly as intended, and with today's ammo prices, this bore sight laser saved me money in the long run by not having to waste the shots on paper to zero the red dot, which made me a very happy customer!