Too heavy to stick on all rifles/pistols (won't stick to 22lr stainless barrel)... - SightMark Triple Duty Universal Laser Bore Sight

Went back and forth with Sightmark. Sightmark advertises the product as working with all rifles/pistols. My 22LR has a stainless barrel. Other magnets stick just fine, but the magnets they use in this one are very weak and therefore will not work on ALL rifles/pistols as advertised. Sightmark support is terrible and I wasn't even sure at first I was talking to a person in the USA. They tried to explain to me how my gun is designed assuming I didn't know my faux suppressor had to be removed. After wasting my time with that response, I explained how the product falls off when the faux suppressor isn't installed. They then tried to explain that my barrel is non-ferrous stainless steel (pretty sure that doesn't exist, all steel contains iron to some degree). Regardless, I sent them a photo of neodymium magnets sticking with no issues even though they said those types of magnets don't work on stainless steel. There are other issues with this product. The arbor that sits in the barrel sits differently depending on the crown or rifling it makes contact with, producing a 2" MOA depending on how the boresight is rotated, so there is no way to know where the product should sit properly for a good sight.