Sig Sauer P365-AXG Legion Custom Works 9mm, 3.1 in Barrel, 17+1, Optics-Ready RMSc Footprint, Integrated Compensator, Grayguns Upgrades
This Sig Sauer P365-AXG Legion from Custom Works pairs an alloy AXG Macro grip module and G10 panels with a stainless slide in Legion Gray Cerakote, a slide-integrated two-port expansion chamber, and an RMSc-footprint optics cut. It features SIG X-RAY3 tritium sights and has been upgraded with the Grayguns P365 Action Cleanup Package and a Grayguns straight flat trigger. The pistol is a striker-fired, no-manual-safety variant with a nominal 17+1 capacity and includes its original factory case and Legion challenge coin.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are some minor and superficial scratches and blemishes present. This firearm is in excellent shape overall.
What's Included
- SIG Sauer factory hard case with foam inserts
- SIG Sauer Legion challenge coin
- 1x SIG Sauer P365-series 17-round steel magazine
The Legion-series AXG Macro grip module provides a robust alloy frame with an extended flared magwell and G10 grip panels for a secure, consistent purchase. A 1913 Picatinny accessory rail is integrated into the dust cover for light or laser attachment as desired.
The stainless-steel slide wears Sig's Legion Gray Cerakote and incorporates a two-port expansion chamber within the slide assembly. It is ported and features front and rear serrations plus an external extractor. The slide is optics-ready with an RMSc-footprint cut, and the factory SIG X-RAY3 day/night tritium sights include a green-ring tritium front and a rear with two tritium vials.
This example is upgraded with the Grayguns P365 Action Cleanup Package and a Grayguns straight flat trigger, complementing the striker-fired action. It is the no-manual-safety configuration.
Capacity is 17+1 with the included magazine, and the compact 3.1 in barrel keeps the overall package carry-friendly while retaining duty-grade features. The factory part number is 365AXGCA-9-LEGION.
Care and usage notes: the submitter reports fewer than 500 rounds fired, and storage has been in a humidity-controlled safe. The serial number matches the factory case label.




