I use Lucas bore cleaner on my SIGs because SIG recommends its use for them. Lucas and SIG have some sort of joint sponsorship agreement. Before Lucas got involved with SIG, SIG had stated in its owner's manuals that bores should be cleaned with gun oil. Have you ever cleaned a bore using only gun oil? It's hideously messy, and takes forever, so I was glad when SIG finally approved a real bore cleaner. Lucas bore cleaner is pretty good. It is a vast improvement over gun oil, but it is not quite as efficient at bore cleaning as the good old Hoppes #9 that I use on my S&Ws and FNX. And if you're one of those unfortunate gun owners whose spouse gripes at you when you open the Hoppes, you'll have no problems with Lucas. Somehow, they've given it a very pleasant aroma.
