I have both, the 4" as stated is better balance, but I am a bit more accurate with the 6" at a longer distance. On closer targets they are both really close. I really think all 3 models I have are great as I have the 6" 6 round also. I would never part with any of them. My personal experience the 6" isn't really that much nose heavy unless you were on your 6th-500 round brick of ammo for the day, then you might notice.

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Craig