Why? Even EOTech sights have clamps.
Some RedDots have machine screws on the clamps, that may not fit into a slot in the base. The problem is not in the RedDot but the dedicated location of slots, in your base. One one occasion I had to cut an extra slot into the base. Just make sure it will fit your base, that's all. By the way, last week there was a customer that did not like the excess amount of base showing because of his short Panaramic. I told him that as long as he still had a good anchor on the base, just cut it off and dress it up. He did just that and thanked me.
Be Safe !!!