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What MAGAzines are compatible? I just bought one, tested with my M17 10round, & it does not fit/sit properly. Thanks! — 3 Answers

by PerfExSI, from NJ, United States Asked on November 15, 2024

Name Timber Creek TC Sig Sauer P320 Grip Module (4.7)
$449.99 $359.99 Save 20%
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Answered by GJ, member, from OR, United States, on February 13, 2025

The factory SIG 21rd mags fit. The SIG 17rd and 15rd do NOT fit. I haven't tired any of the other brands.

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Answered by GJ, member, from OR, United States, on January 17, 2025

A SIG factory 21rd mag will work. A SIG factory 15rd or 17rd will not work; doesn’t matter which baseplate style (old vs new). I’ve not tried any after market mags.

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Answered by PerfExSI, member, from NJ, United States, on November 23, 2024

Received my Henning PRO Series Alluminum P320 XSERIES Base Plates (XFive Legion) today and switched out the standard plates on my 10-rounders and the mags now fit the TC grip module. Issue resolved. Woo!

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Last updated 2025-11-12 UTC.