I am not an engineer but they do look the same as far as how they operate, the features etc. Maybe the material is different. I was in the gun shop and had a Harris in one hand and a Champion in the other hand, without the name I couldn't tell which was which. Thats what made me curious how they could look as if to be the same and not be a patent infringement.
Maybe the copies are made by Harris and put another name on them to compete with the lower cost ones.
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