scootter

I have a 510 c on my atlas chaos open gun 9mm am setting up a mark IV for steel challenge want to put 510c on it also, so what and where do I get a low profile mount to fit on markIV 22/45 lite,also my holosun on open gun glass will not come clean with any eyse glass wipes or glass cleaner any suggestions on what to use it looks like it’s just Smokey like ya shot 6 stages but won’t clean off. thanks