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I have both the AAC M4-1000 and 2000. The 2000 is smaller and lighter but costs a lot more. I shoot my 10.5" ar without plugs but it makes more noise than a 20" for sure. Flash is not too bad with the powders I use. I doubt you will have a home SD situation where you could over heat either one but you don't want to touch it right after a few mag dumps either.
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