OSA Glock Optic Cut – Trijicon SRO
The OSA Trijicon SRO Optic Cut is designed for shooters who want to maximize the performance of the Trijicon SRO with a true direct-milled installation. By machining the optic directly into your Glock slide, the SRO sits significantly lower than factory MOS plates or dovetail adapters, creating a stronger mounting interface, improved durability, and a faster, more natural presentation.
Whether you're building a USPSA race gun, competition pistol, range gun, or high-performance carry pistol, a direct-milled slide is the strongest and most reliable way to mount your optic.
Note: This optic cut is not compatible with the Trijicon RCR or Holosun adapter plates.
Compatible Optic
- Trijicon SRO (All Models)
Service Includes
- Precision Trijicon SRO optic cut
- Complete slide disassembly and reassembly
- Iron sight installation (some limitations apply)
- New striker channel liner installed on all refinished slides
- Two pairs of 4-40 x 3/8" T10 Torx mounting screws
- Precision-machined front indexing posts and integral recoil bosses
- Choice of finish:
- Optic Cut Only (Cold Blue)
- Single Color Cerakote
- Camo Pattern Cerakote
Precision Machining
The slide is machined to a depth of 0.150", allowing the optic to sit lower than adapter plate systems while maximizing screw engagement and maintaining an exceptionally secure mounting interface.
This cut incorporates front indexing posts and integral recoil bosses surrounding the mounting screws. These precision-machined features absorb recoil forces, reduce stress on the mounting hardware, and help maintain zero even after thousands of rounds and repeated optic removal.
The result is a stronger, cleaner mounting solution built for hard use.
Iron Sight Compatibility
Recommended AmeriGlo sight heights:
Lower 1/4 Co-Witness
- AmeriGlo (.260" Front / .355" Rear)
Lower 1/3 Co-Witness
- AmeriGlo 1XL (.315" Front / .394" Rear)
Absolute Co-Witness
- AmeriGlo 3XL (.365" Front / .451" Rear)
Our Thoughts
If you're looking for the best competition pistol optic available, it's hard to beat the Trijicon SRO.
Its massive viewing window, thin bezel, and crisp dot make target transitions faster and dot tracking noticeably easier than most enclosed or duty-focused optics. It's the optic we most often recommend for USPSA, Steel Challenge, and shooters who prioritize speed.
A direct-milled slide lets you take full advantage of everything the SRO has to offer. By eliminating adapter plates, the optic sits lower in the slide, improving presentation, increasing mounting strength, and creating a cleaner overall package.
Combined with precision-machined recoil bosses and quality mounting hardware, this cut provides the durability and repeatability expected from a professional-grade optics system.
Every refinished slide also receives a new striker channel liner during reassembly—one of the many small details we include to ensure your slide is returned ready for years of dependable service.
Turnaround & Shipping
- Current Lead Time: Approximately 2–3 Weeks
- Please include a copy of your order invoice when shipping or dropping off your slide.
Professional Machining
OSA partners with Battle Werx, one of the industry's premier Glock slide machining specialists, for all optic milling services. Every slide is professionally machined, inspected, refinished (if selected), and returned ready for hard use.
Patent Information
This service incorporates patented optic cut technology pioneered by ZEV Technologies (U.S. Patent RE47335), providing an industry-leading mounting interface engineered for maximum strength, repeatability, and long-term reliability.
