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CMMG + Magazines CMMG, Inc Magazines CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine Q&A Question - Do these have last shot hold open? CMMG + Magazines CMMG, Inc Magazines + Rifle Magazines CMMG Rifle Magazines CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine Q&A Question - Do these have last shot hold open? CMMG + Magazines CMMG, Inc Magazines + Rifle Magazines CMMG Rifle Magazines + AR Rifle Magazines CMMG AR Rifle Magazines CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine Q&A Question - Do these have last shot hold open?

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CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine

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Answered by Josiah fisher, member, from NC, United States, on September 04, 2026

yes but you have to use a CMMG radial delayed bolts and barrel with it.

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CMMG + Magazines CMMG, Inc Magazines CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine Q&A Question - Do these have last shot hold open? CMMG + Magazines CMMG, Inc Magazines + Rifle Magazines CMMG Rifle Magazines CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine Q&A Question - Do these have last shot hold open? CMMG + Magazines CMMG, Inc Magazines + Rifle Magazines CMMG Rifle Magazines + AR Rifle Magazines CMMG AR Rifle Magazines CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine CMMG Mk4/AR15 Gen 2 9mm Luger 33 Rounds Rifle Magazine Q&A Question - Do these have last shot hold open?

Last updated 2026-09-04 UTC.

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Do these have last shot hold open? — 1 Answer