[Lurkinanloomin]

We don’t recommend trying to install the extension onto the barrel yourself.
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Then what is the point of a how-to video?

[Yo-Yo]

We don’t recommend trying to install the extension onto the barrel yourself.
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Then what is the point of a how-to video?

Not that I have a whole lot of experience, but I've never seen an AR barrel for sale that didn't already have the barrel extension attached.

I didn't know you could buy AR barrels without extensions, unless you're a manufacturer buying barrel blanks.