I own an SR1911, and love it. I noticed that stamped on the barrel is the letter "R" to the right of the barrel link. Is this a mark for "Reject" or for "Ruger?" Has anyone noticed this on their SR1911? The reason I am asking is because I noticed the barrel is wearing on the frame more to one side. I have only had around 300 rounds through it, and I know the breaking in wearing will not be totally even on both sides, but with the letter "R" on it, it makes me wonder. The pistol cycles fine with no problems, so maybe I should not worry about it, I was just curious if anyone else had the same markings?