I got my 4 ruger hi cap mags from rocky mountain arms today with the teflon bearcoat finish on them. He did a great job. They are so slick and worked excellent. I think they will be very durable. Will find out in time. He even took out the floorplate and coated it also. He coated all 4 for 50.00 including shipping. He was running behind this week and I told him I needed them by saturday. So Bob called me last night and said he would send them overnight at his expense. About 25.00 I believe. He didn`t charge me for this, now this is service. Just had to give him a plug. Roger