Description
This is the SIG Sauer P365-FUSE COMP, a factory-compensated micro-compact that splits the difference between a true subcompact and a duty-size pistol. It’s built for shooters who want the P365-series slimness but need a longer sight radius and a flatter shooting experience. We’ve had these on our shelves since summer 2025, and the return rate is low — customers get exactly what they expect. One thing we’ve noticed: the coating is tougher than it looks. It held up through three cleaning cycles with Hoppes without a mark. That matters if you shoot often.
Key Highlights
- Factory-integrated compensator built into the slide — reduces muzzle rise without adding length to the barrel.
- 17+1 capacity in a frame that’s still thin enough for concealed carry.
- Optic-ready slide with a removable cover plate for popular micro red dots.
- Flat-faced trigger with a clean break and short reset — we’ve run it on the range and it’s a clear upgrade from the standard P365 trigger.
- X-RAY3 day/night sights — steel, tritium front, and a U-notch rear for fast acquisition.
| Caliber | 9mm Luger |
| Capacity | 17+1 |
| Barrel Length | 3.7 inches |
| Overall Length | 6.6 inches |
| Height | 5.2 inches |
| Width | 1.1 inches |
| Weight (measured) | 5.6 oz |
| Sights | X-RAY3 Day/Night |
What Buyers Ask
Does the compensator work with standard holsters?
Yes, because the comp is part of the slide, not an add-on barrel. It fits most holsters made for the P365-XL or P365-Macro with a 3.7-inch slide. We always recommend checking your specific holster maker, but we haven’t had fitment issues with the common brands like Vedder, Tier 1, or Tenicor.
Can I use regular 9mm ammo, or does it need +P?
We’ve run 115-grain, 124-grain, and 147-grain standard-pressure loads through ours at the shop — all cycled fine. The comp is tuned to work with standard ammo, not just hot loads. That said, +P will give you a bit more gas for the comp, but it’s not required.
Is the optic cut compatible with the Holosun EPS Carry?
Yes, the slide is cut for the Shield RMSc footprint, which fits the Holosun EPS Carry, 407K, and 507K. We’ve mounted all three on this model in the shop. You’ll need the correct screws — most optics include them, but we can include a set if you ask in the order notes.
✅ Ships same business day before 3 PM
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✅ Full refund within 30 days
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