Icarus Precision ACE 311– P365 into a 1911 Double Stack!?

Published on December 6, 2025
Duration: 8:33

This guide details the installation of the Icarus Precision ACE 311 grip module onto a Sig Sauer P365 platform. The process involves transferring the Fire Control Unit (FCU) and securing it with a new set screw for enhanced stability. This modification aims to provide the P365 with the ergonomic feel of a 1911 or 2011 double-stack pistol, as explained by the video's host, who demonstrates a high level of expertise.

Quick Summary

The Icarus Precision ACE 311 grip module converts a Sig P365 into a pistol with 1911-like ergonomics. It features an FCU set screw for stability and is compatible with X-Macro magazines. Standard holsters will not fit; dedicated options are required.

Chapters

  1. 00:00Introduction to ACE 311
  2. 01:15Build Breakdown
  3. 01:42Holster Compatibility
  4. 02:39FCU Locking Mechanism
  5. 04:32Technical Specifications
  6. 05:25Comparison with Standard ACE Module
  7. 06:39Size Options and Fitment
  8. 07:41Pricing and Conclusion

Frequently Asked Questions

What is the main benefit of the Icarus Precision ACE 311 grip module for the Sig P365?

The ACE 311 grip module transforms the Sig P365 by providing a 1911 or 2011 double-stack pistol's ergonomic feel, including a distinct grip angle and increased thickness for better handling.

How does the ACE 311 secure the Fire Control Unit (FCU)?

It features a unique set screw located under the accessory rail. Tightening this screw locks the FCU firmly into the grip module, eliminating any potential play or movement for a more solid firearm.

What magazines are compatible with the Icarus Precision ACE 311 grip module?

The ACE 311 grip module is specifically designed for compatibility with Sig P365 X-Macro magazines, supporting both the 17-round and 21-round capacities.

Will my standard Sig P365 holsters fit the ACE 311 grip module?

No, standard P365 holsters are generally not compatible with the ACE 311 due to its increased width and modified rail design. You will need holsters specifically made for this module.

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