Sig Sauer P365XL Custom Works Spectre 9mm, Icarus Precision Aluminum Grip, PMM Comp, Night Sights, 12+1, 3.7 in Barrel (2021)
This P365XL Custom Works Spectre stands out with its factory Spectre slide featuring X-window cuts and a distressed/stonewashed finish, paired with an installed Icarus Precision A.C.E. aluminum grip module and a PMM compensator. It is chambered in 9mm Luger with a 3.7 in barrel, includes two 12-round magazines, and comes with the SIG Custom Works challenge coin, factory case, and manual. Produced in 2021 and made in the USA, it presents in excellent overall condition with a clean, mirror-bright bore.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The optic cover plate with rear sight is included but not installed; two cover‑plate screws are included. No additional mounting hardware is included.
What’s Included
- SIG Sauer factory hard case
- SIG Sauer P365 manual
- SIG Custom Works challenge coin
- Two 12-round SIG Sauer P365 steel magazines with extended floorplates
- SIG Sauer OEM 9mm x 19 barrel
- P365XL optic cut cover plate with screws (not installed)
- Parker Mountain Machine (PMM) compensator (installed)
- Icarus Precision A.C.E. aluminum grip module (installed)
- Holster
The factory Custom Works Spectre slide brings X-pattern top window cuts, front and rear serrations, and a distressed/stonewashed finish. It is cut for optics and includes the P365XL cover plate (not installed). Slide markings include "SIG CUSTOM WORKS" and "P365."
The installed Icarus Precision A.C.E. aluminum grip module delivers a pronounced beavertail, high undercut, and aggressive texturing, along with an integral multi-slot 1913 accessory rail. It bears Icarus branding details including "Washougal WA, USA" and the wing and spade emblems.
Performance-focused touches include the flat-faced X-Series trigger, a reversible push-button magazine release, and a striker-fired, locked-breech action. The night sights feature a green-ring front, complementing the slide serrations for confident manipulation.
A PMM-branded compensator is installed at the muzzle. The pistol is chambered in 9mm Luger with a 3.7 in XL-length slide and a 12+1 capacity, and it comes with two 12-round steel magazines with extended floorplates.
Made in the USA and manufactured in 2021, this Spectre-series P365XL arrives with the SIG factory hard case, P365 manual, and the SIG Custom Works challenge coin.

