Q&A for Geissele 6mm ARC, 20 Rounds, Rifle Magazine

Geissele 6mm ARC, 20 Rounds, Rifle Magazine

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MOOOSE, guest, from KS, United States, asked on December 20, 2025

Do these work with 6.5 Grendel?

Answered by HL, member, from NC, United States, on January 12, 2026

Yes, and does well with 6.5 Grendel (and okay with .338 ARC). The case is the same size as 6.5 Grendel at the base, and only vary in actual bullet sizing. Other ARC magazines handle both 6.5 Grendel and 6mm ARC, too. Issues usually happen when you try to load more than 15 rounds or so into a magazine. The bend in high-capacity ARC magazines can cause misfeeds. Since this magazine is straight, it feeds well for all 20 rounds.

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Q&A for Geissele 6mm ARC, 20 Rounds, Rifle Magazine — 1 Questions & 1 Answers

Do these work with 6.5 Grendel?

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Q&A for Geissele 6mm ARC, 20 Rounds, Rifle Magazine — 1 Questions & 1 Answers

Do these work with 6.5 Grendel?