re: Anyone ever build a 9mm AR?

quote:

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just the fun factor?

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For the cost of a 9mm AR set up, you'd save loads of money just getting a Hi-Point carbine, or step up to a Beretta Storm.

Now if you're planning on doing hard core dynamic entries, that may be another story. Maybe the AR platform is justified.

Now when you have no logic to truly justify it (or any other weapon), then it's the "fun factor" and the "fun factor" is a very valid factor that has justified more than one of my purchases.