OSA Sig P365 Optic Cut – Holosun 507K / 407K / EPS / EPS Carry

Upgrade Your P365 for Modern Red Dot Performance

Take your Sig Sauer P365 to the next level with a precision optic cut from Ocean State Armory. Our machining service is designed specifically for the Holosun 507K, 407K, EPS, and EPS Carry footprint, providing a low-profile, direct-mount solution for improved durability and a more natural sight picture.

Every slide is precision machined using professional CNC equipment to ensure proper optic fitment and reliable performance.

Compatible Optics

This optic cut is compatible with:

Holosun 507K
Holosun 407K
Holosun EPS
Holosun EPS Carry

A direct-milled optic sits lower than most adapter plate systems, allowing for improved presentation, a more secure mounting surface, and, in many cases, compatibility with factory-height backup sights.

Cerakote Finish Options

After machining, choose the finish that best fits your build:

Optic Cut Only (Cold Blued) – Machined area protected with bluing
Single Color Cerakote – Complete slide refinished in your choice of Cerakote color
Camo Pattern Cerakote – Custom multi-color Cerakote camouflage finish

If selecting Cerakote, please include your desired color(s) in the order notes during checkout.

Shipping & Drop-Off Instructions

When shipping or dropping off your slide, please include:

A printed copy of your order invoice
Your stripped P365 slide (remove the barrel, recoil spring assembly, and optic if installed unless you've arranged for disassembly services)

Proper packaging helps ensure your slide is processed quickly upon arrival.

Turnaround Time

Estimated Lead Time: 3–4 Weeks

Every slide is individually machined, inspected, and refinished (if selected) to ensure the highest quality before it is returned to you.

Why Choose Ocean State Armory?

Every optic cut is performed with precision and attention to detail. We take the time to ensure proper optic fitment, clean machining, and a professional finish that complements the reliability of your Sig P365.

Whether you're building an everyday carry pistol, a competition gun, or upgrading your defensive firearm, our optic cuts are designed to provide a secure mounting solution that performs when it matters most.

Precision Machining. Professional Craftsmanship. Built the OSA Way.