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I order one of these it came with three pieces the two polymer pieces and a piece of stamped metal what is the metal piece used for — 1 Answer

by Randal, from MO, United States Asked on January 1, 2020

Name Pro Mag AR-15 / M16 9MM Magazine Adapter Block For Colt 9mm SMG Magazines, Quick Change (3.3)
$72.99 $64.49 Save 12%
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Answered by Ethan C., Gear Expert, from IL, United States, on March 20, 2020

This comes with the two-piece adapter, and a center piece that is only for keeping the sides from bowing in when not installed.

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