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Will this work with a AR-9 Glock Mag platform? — 2 Answers

by AnthonyA, from OH, United States Asked on May 4, 2022

Name Geissele Maritime Bolt Catch (4.7)
$70.94 $43.99 Save 38%
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Answered by Hunter, Gear Expert, from OH, United States, on May 20, 2022

The Geissele Maritime Bolt Catch works with Mil-Spec dimension AR15's and may not be compatible with Billet receivers according to the manufacturer. So if your AR9 is Mil-Spec dimensions it might work.

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Answered by Anthony A, guest, from OH, United States, on May 20, 2022

I took a chance and ordered it. It did not work on my AR-9. I have a Spikes Tactical lower with a PSA upper and a Gen-4 BCG from PSA. It did not raise high enough to catch the bolt. It was close and would start to catch but ultimately I could not lock my bolt back. Will just save as a back up part for my AR-15.

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Last updated 2025-11-12 UTC.