Apex Optic Mount for ACRO/MPS* – Sig P320 Sig-LOC Slide Cut including M17 / M18 Models
About this product
Apex Optic Mount for ACRO/MPS* – Sig P320 Sig-LOC Slide Cut including M17 / M18 Models by Apex Tactical. Fits Sig Sauer.
Nationwide shipping. Order from anywhere in the US.
The Apex Optic Mount for ACRO/MPS optics is built specifically for the Sig P320 Sig-LOC slide cut, including M17 and M18 models. This mount gives you a rock-solid platform for your red dot, designed to survive Arizona’s high-dust, extreme-heat conditions. Whether you’re shooting suppressed or running a compensator, this mount keeps your optic locked in place and your rear sight functional.
Real benefits for desert shooters:
- Integrated rear sight with gas shield: The rear sight sits in front of your optic and doubles as a gas shield. This keeps carbon and debris off your lens longer, a major advantage in dusty environments or when shooting suppressed. Less cleaning, more shooting.
- Co-witness clarity: The integrated rear sight provides a lower 25% co-witness through the optic window. This lets you use your iron sights if the dot fails without cluttering your field of view. You will need a tall front sight — two height options are available depending on your barrel length.
- Precision-regulated POA=POI: Sights are regulated for point-of-aim equal to point-of-impact at 15 yards with 124 grain NATO ammunition (applies only to mounts with the integrated rear sight). That means less guesswork when zeroing.
- Factory LCI compatible: Designed to work with the factory Loaded Chamber Indicator on your P320, so you don’t lose that feature.
- Durable CNC construction: Made to withstand Arizona heat, direct sun, and the repeated thermal cycles of suppressed fire. No warping, no shifting.
Compatible optics:
- Aimpoint Acro P-1 & P-2
- Steiner MPS
- Lead & Steel Pandora PB-3
Fitment details:
- Designed for Sig Sauer P320 models with the factory R2 slide cut (Legion, M17, M18, and other R2-cut variants)
- Works with 3.9”, 4.7”, and 5” barrel lengths — select the correct front sight height for your setup
- Includes all necessary mounting hardware for a direct, no-plate installation
At $65, this mount delivers a secure, low-profile solution that keeps your optic clean, your irons usable, and your pistol running hard in the harshest conditions. No adapters, no extra plates — just a direct fit that works.