The Meprolight microRDS (MPN 88070502) brings full-size red dot performance to a compact Sig Sauer P226 or P320 pistol. Its patented QD adaptor clips into the existing rear sight dovetail slot — no drilling, tapping, or gunsmith needed — and mounts or dismounts without losing zero.

Key Specifications

• 1x magnification. A compact pistol red dot.
• 3 MOA dot reticle. Sized for fast, precise pistol-range aiming.
• 0.90 MOA per click. Fine adjustment resolution.
• Patented quick-detach adaptor kit. Uses the pistol’s existing rear sight dovetail slot — no drilling, tapping, or gunsmith required.
• Mounts and dismounts without re-zeroing. Consistent zero retention every time.
• Doubles as a TruDot backup sight. The adaptor gives a self-illuminated backup sight when the red dot is removed.
• Fits Sig Sauer P226 and P320 pistols. Also compatible with any pistol with red dot capability.
• Doubles as a rifle/shotgun backup optic. Useful as a close-quarters red dot on long guns too.
• Unlimited eye relief. Both-eyes-open aiming at any head position.
• 1.90 inches overall. A compact footprint on a slide-mounted adaptor.

Frequently Asked Questions

Do I need to re-zero after removing and remounting this sight?

No — the patented QD adaptor is designed to mount and dismount without losing zero.

What happens to my sight picture if I remove the red dot?

The QD adaptor doubles as a Meprolight TruDot self-illuminated backup sight, so you still have a usable sight picture with the red dot off.

What pistols does this fit?

It’s built for Sig Sauer P226 and P320 pistols and mounts to the existing rear sight dovetail slot with no drilling, tapping, or gunsmith work.

Buy the Meprolight microRDS 3 MOA Red Dot – Sig P226/P320

Add a full-size red dot’s speed to your Sig Sauer pistol with the Meprolight microRDS. Shop the full Meprolight lineup or browse more Red Dots Sights in our Red Dots Sights category at Schaefer Defense.