I think the KA have the correct cylinders... all you need to do to check is take your upper off... if it's matched properly your port will be in and around the 3/4 mark up the cylinder. You can go with a 7/8, one with cuts at the end or a full cylinder if you wanted and you won't notice much of a difference unless you use super heavy rounds.
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I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.
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