Holosun 507 COMP vs Kastle ACRO-193: Optic Mount Options
By Shop Tactical Gear & Holsters丨Guerrilla Tactical | Published: 2026-10-21
Category: Comparisons
Compare the Holosun 507 COMP red dot sight and the Kastle ACRO-193 optic mount. Learn which setup fits your pistol and shooting needs, with clear tradeoffs and fit guidance.
Quick answer
If you already own a Holosun 507 COMP, you need a direct-mount solution for its proprietary footprint. The Kastle ACRO-193 is designed for the Aimpoint ACRO footprint, so it won't fit the 507 COMP without an adapter. Choose based on your optic's footprint and desired centerline height.
Footprint Differences Matter Most
The Holosun 507 COMP uses a proprietary footprint that is different from the Aimpoint ACRO footprint. The Kastle ACRO-193 is built specifically for the ACRO footprint, so the two are not directly interchangeable. If you're committed to the 507 COMP, you'll need a mount that matches its footprint or an adapter plate.
The Kastle ACRO-193 offers a 1.93" optical centerline, which is higher than many standard pistol optic mounts. This height can provide a more natural head-up position for shooters who prefer a taller sight picture, but it may require suppressor-height sights or a specific holster cut.
Weight and Build Considerations
The Kastle ACRO-193 is machined from 7075-T651 aluminum with a Type III MIL SPEC hardcoat anodized finish, weighing only 2.8 oz. It uses Titanium K-Clamp mounting tech for secure attachment. The Holosun 507 COMP, by contrast, is a complete optic with a large 1.1" x 0.87" objective lens and its own mounting system. If you're building a lightweight competition gun, the 507 COMP's integrated mount may save weight and complexity.
However, if you prefer the flexibility to swap optics or use a dedicated mount for your ACRO-pattern sight, the Kastle ACRO-193 is a robust, made-in-USA option.
Tradeoffs at a glance
- Footprint compatibility: The Kastle ACRO-193 only fits Aimpoint ACRO footprint optics. The Holosun 507 COMP uses its own footprint. They are not directly interchangeable. If you own a 507 COMP, look for a mount designed for its footprint or use an adapter plate.
- Centerline height: The Kastle ACRO-193 provides a 1.93" centerline, which is higher than typical pistol mounts. This can improve head-up posture but may require taller sights or a holster cut for the optic. Consider your existing sight setup and holster compatibility before choosing a tall mount.
- Weight and construction: The Kastle ACRO-193 weighs 2.8 oz and is made from 7075-T651 aluminum with MIL SPEC hardcoat. The Holosun 507 COMP is a complete optic with its own housing and lens; its weight is not listed, but it is a full-featured competition sight. If weight is critical, compare total system weight with your chosen mount and optic combination.
Product facts at a glance
- Kastle ACRO-193 Optic Mount: The Kastle ACRO-193 optic mount has a 1.93" optical centerline and is designed for the Aimpoint ACRO footprint. This mount is ideal if you use an ACRO-pattern optic and want a taller sight picture, but it will not fit a Holosun 507 COMP without an adapter.
Kastle ACRO-193 Optic Mount - Holosun 507 COMP (Red): The Holosun 507 COMP features a large 1.1" x 0.87" objective lens and Holosun's Competition Reticle System (CRS) with multiple reticle options. Its large window and reticle choices are designed for fast target acquisition in competition, but its proprietary footprint limits direct mount compatibility with non-Holosun mounts.
Holosun 507 COMP (Red)
Which setup fits your needs?
Best for
- Shooters who already use an Aimpoint ACRO-pattern optic and want a tall, secure mount
- Competition shooters who prefer a higher centerline for a more natural head-up position
Not for
- Anyone who owns a Holosun 507 COMP and expects a direct fit without an adapter
- Shooters who want a low-profile, standard-height optic mount
