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Q&A for SIG SAUER P320 Full Size Threaded Pistol Barrel, 9mm Luger — 12 Questions & 4 Answers

Name SIG SAUER P320 Full Size Threaded Pistol Barrel, 9mm Luger (5)
$229.99 $179.99 Save 22%
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Q
JAY, member, from KY, United States, asked on February 21, 2025

Does it for the M18?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on February 21, 2025

The SIG SAUER P320 Full Size Threaded Pistol Barrel would be compatible with the M18. However, this barrel was designed for full size P320 model pistols, meaning it will stick out much further past your slide. The correct size barrel for an M18 can be found linked below:
https://www.opticsplanet.com/sig-sauer-p320-compact-carry-9mm-threaded-barrel.html

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Q
Taron, member, from MO, United States, asked on January 24, 2025

Will this fit me XFive?

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A
Answered by Ethan, Gear Expert, from IL, United States, on January 24, 2025

This SIG SAUER P320 Full Size Threaded Pistol Barrel is not compatible with the P320 X-Five.

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Q
tylrovtn, member, from NC, United States, asked on July 23, 2024

Will this fit m17

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A
Answered by Ethan, Gear Expert, from IL, United States, on July 23, 2024

Yes, the SIG SAUER P320 Full Size Threaded Pistol Barrel is compatible with the P320 M17 (non-commemorative).

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Q
Jake, guest, from TX, United States, asked on June 21, 2024

Does this have the LCI slot?

A
Answered by S, member, from VA, United States, on December 14, 2024

Yes, this part 8900566 has the LCI, opticsplanet also has 8900443 without the slot.

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Q
hsld, member, from OH, United States, asked on May 30, 2026

What thread pattern

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Q
Jonathan Chee, member, from AZ, United States, asked on January 19, 2026

Will this work on the 320 X series? 320 X full?

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Q
Joshua Rodriguez, member, from CA, United States, asked on August 19, 2025

will this fit an M17X?

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Q
Brandon, member, from MI, United States, asked on June 13, 2025

Will this barrel fit the P320X5 DH3 ?

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Q
Tim White, member, from IA, United States, asked on December 28, 2024

Will this work for full size p320 tacops?

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Q
Dollar hill, member, from PA, United States, asked on September 23, 2024

This barrel is okay fit on P320 AXG LEGION(comp)?

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Last updated 2025-11-12 UTC.