They were last for sale and updated in the 2009 timeframe, so I don't think they will cover a bunch of newer guns.... I recall seeing that they don't handle the truspeed or truspeed S... And I would doubt stalker XLR... Against stuff like pl3 and ultralytes they might still be ok, but why risk it, stalker XLR, truspeed and truspeed S are pretty common guns.
They were essentially knock offs of the Antilaser G7 (I think G7 could be one of the other) along with the Laser Defender. You could swap the heads between them for the most part. Also the LPP was supposed to have items to turn on your lights at home, or open the garage door when you pulled in the driveway, but I never saw that actually work.
The heads used to get water in them fairly easily and I think I replaced 3 heads over time and ordered 1-2 extra to have.
I have 2 LPPs that are updated for the TruSpeed sitting in my closet. Most of them did not have support for the TruSpeed when it was released and there was a lot of jammer drama that arose when that gun came out as you can imagine . The updated LPP worked well against my TruSpeed. For the most part in NY I could probably still be using them. I get hit by mainly the Ultralyte followed closely by the Truspeed. Rarely see a Stalker Lidar Upstate.
I would give them away if anyone wants them, along with an Antilaser G7??, Blinder M-25, and a set of Lidatek LE30s and a few extra lpp/laser defender/ALG heads.