Home AR-15 The amazing 5.7 AR15

The amazing 5.7 AR15

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The AR 57 upper converts a standard AR lower into a 5.7×28 rifle that uses P90 magazines.

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20 COMMENTS

  1. I'd be trying to reload the spent shell box. I've spent too much time learning and practicing the AR to relearn it. One of the coolest gun mods ive seen in 22 years of my experience in firearms. Stay dangerous!

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