The Constant on worked fine. I took the batteries out and tried again the next day.

No joy! Called LaserLyte and they sent a new “sound module” (the brass cylinder). Again, it worked for a short period, then constant-on became erratic.

Called them and they sent a whole new unit. Worked for a short period of time, then no-go in either mode. Replaced the batteries and it worked for about 10 firings after much fussing with it (batteries in and out, turn brass cylinder, etc.)

Very frustrating. Takes more time to get it to work than I have for dry-firing practice. (by the way, am I the only one that noticed that the drawings in the instruction booklet have the battery holder backwards?)

Please see my post above. After emailing Laserlyte again, I finally got definitive answers to my questions and speculations.

They state the LT-1 is accurate to 4 inches at 100 yards, and about an inch at 25 yards. This is more than good enough for pistol training. As far as battery life goes, they explained that in continuous mode it is about 1-1/2 hours. But in intermittent – training mode – they claim about 2000 shots per set of batteries. That is plenty too and more than reasonable, considering its price.

Based on these I can give the LT-1 my complete recommendation.

1. You need at least a 3 inch barrel.

2. The unit runs continuously, so the batteries will last only about 1-1/2 hrs, which can work by finding a cheap source of bulk batteries.

3. It CAN be used for decent sight checking for SD pistols (within limits, see below).

My observations:

Because of the battery life, it is best used as an addition to dry firing, to check how you are doing. Laserlyte sells 12 batteries for $12, which should be about 6 hours of useage. If you use the LT-1 for say 30 minutes a week – and this would be more than enough – that works out to about $1.33 a week. Not bad.

Because of the design (continuous drain when in) the batteries should be taken out right after you are done. Don’t leave them in to drain.

Last, when you call Laserlyte they state the LT-1 cannot be used for sighting in. And they avoid giving out any accuracy figures (I asked what the accuracy would be “for training purposes”, at say from 5 to 25 yards (SD distance). They hedge on this too, will only say “it’s fine for training”.

So I took the time to measure their Universal Standard boresighter closely.
The business end of this boresighter is close to 3.9 inches, compared to the LT-1 at 2.75 inches. This correlates with Laserlyte’s advertising which states the Universal boresighter needs “at least a 4 inch barrel”, while the LT-1 needs a “3 inch barrel”. In other words the LT-1 trainer is 70% the length of the boresighter.

Visually, the only difference between the designs is the length of the probe. They both use the same delrin caliber fittings at the end of the probe, so it’s fair to assume they both exhibit the same amount of misalignment.

Laserlyte says the Universal boresighter is good to “…a couple of inches at 100 yards”. Let’s assume even worse, say 3 inches. Assuming my trigonometry is accurate, This means the LT-1 will be that accurate at 70 yards. At 25 yards I’d then estimate the LT-1 at 1 inch, probably less. If the Universal boresighter is truly good to “a couple inches” – 2 inches – as they claim, at 100 yards, then the LT-1 is good to under 3/4 inch at 25 yards.

That’s better than I can shoot.

So although this is NOT really intended as a boresighter for say a rifle, this is plenty good enough for my needs in centering a SD handgun.

Last I’d like to say what a tremendous tool this is. In changing to a heavier trigger, I found my Glock shooting low and left. Now I knew this was a matter of trigger control, maybe milking due to the heavier pull. So I dry-fired all week with great care, watching my sights closely.

But until you go to the range (and spend maybe $20-25), I wouldn’t know. Then the LT-1 arrived in the mail, and I quickly installed it. Amazing! It took me only a few dry-fires with the LT-1 to see that my work had paid off. My “shots” were going about where I intended. In continuous mode, I was able to see that my sight hold was pretty good too.

One of my big concerns was whether the laser would be bright enough, and last long enough, for me to see it properly. Laserlyte state the flash lasts for “100 milliseconds”, which of course doesn’t mean much to me. What I found was that the flash was just long enough to see and place it accurately. Too long and you’d be painting pictures.

Nicely done. In sum, a training aid to supplement and check your dry firing practice, isolate problems, at reasonable price. And maybe even provides a way to check your SD pistol sights at SD ranges.

Overall, though it is a good product. Hopefully, I will also be impressed with their customer service.