I am with you - used it for years, especially on handguns. It was a great product.I really miss GM Top Engine Cleaner (original formulation) - removed carbon crud cleanly and quickly. But, dangerous - (that’s why it worked), environmentally unfriendly (of course), smelled bad (but you know that was good). Not a wimp cleaner.
KG or Boretech for me with a bias to KG now...
The chameleon gel has abrasives. Read the sds sheet on their website. Contains calcite iirc.+1 for Bore tech. Received my order of their Camealion product. It is a paste that they say is non abrasive. When used in conjunction with their C4 liquid it works better than anything else I've tried in the last 20 years. I used to buy used rifles and fix them up. I've spent weeks getting a barrel clean. This new combo on a bad 22-250 brought that down to just two days this past week. I'm a believer.