Description
The Sig Sauer ROMEO1PRO brings a new level of durability and performance to the miniature open-reflex red dot sight. Its aircraft grade aluminum housing ensures corrosion resistance under the harshest environments and a new upgraded point-source emitter provides increased brightness in day or night conditions with 12 brightness settings. The molded glass aspheric lens has upgraded high performance coatings for superior light transmittance and zero distortion giving you fast responsive target acquisition and accuracy. The ROMEO1PRO includes a ruggedized protective shroud in the box for extreme durability.
ROMEO1PRO is Compatible With :
- M17
- M18
- P320-M17
- P320 XFive Legion
- P320 XCompact
- P320 XFull
- All PRO-CUT Slides
- P320 Pro Series
- Molded glass aspheric lens with high-performance coatings for superior light transmittance and zero distortion
- 3 or 6 MOA red dot with multiple brightness settings for rapid target engagement under a full range of lighting conditions
- TruHold Lockless Zeroing System that utilizes twin adjustment springs designed to endure handgun recoil and return to zero shot after shot
- Point-source emitter provides exceptional brightness with 12 settings (10 Daytime/2 NV) and 20000+ hours of runtime
- MOTAC (Motion Activated Illumination System) that powers up when it senses motion and powers down when it does not
- Aircraft grade CNC Aluminum housing ensures a lifetime of reliable service
- Dependable waterproof (IPX-7 rated for complete water immersion up to 1 meter) and fog proof performance
- Ruggedized protective steel shroud included for extreme durability
- SIG SAUER Electro-Optics Infinite Guarantee and SIG SAUER Electronic Component Limited 5-Year Warranty
- Please note this product is NOT compatible with slides cut to accept a standard ROMEO1. The ROMEO1PRO is NOT rated for 10mm.
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Optics Knowledge Center
Understanding Rifle Scope Basics
Magnification
Magnification refers to how much larger an object appears through the scope compared to the naked eye. Fixed power scopes have one magnification setting, while variable power scopes offer a range (e.g., 3-9x).
Objective Lens
The objective lens is the front lens that gathers light. Larger objective lenses (measured in mm) gather more light, providing brighter images in low-light conditions but add weight and require higher mounting.
Reticle
The reticle (crosshair) is the aiming point inside the scope. Modern scopes offer various reticle designs, from simple duplex crosshairs to complex ballistic reticles with holdover points for different distances.
Adjustments
Rifle scopes have turrets for windage (horizontal) and elevation (vertical) adjustments. These are measured in MOA (minutes of angle) or MRAD (milliradians) and allow precise aiming adjustments.
Proper Scope Mounting Guide
Select the Right Rings & Base
Choose rings that match your scope's tube diameter (typically 1", 30mm, or 34mm). Select a base compatible with your rifle's receiver. For heavy-recoiling rifles, opt for stronger mounts.
Install the Base
Clean the receiver and base thoroughly. Apply a small amount of blue Loctite to the screws. Attach the base to the receiver and torque the screws to manufacturer specifications.
Attach the Rings
Attach the bottom halves of the rings to the base. Place the scope in the rings and loosely attach the top halves. Don't fully tighten yet.
Set Eye Relief & Level
Position the scope for proper eye relief (3-4 inches) in your normal shooting position. Ensure the reticle is level using a scope leveling tool. Once positioned correctly, tighten the rings evenly in a cross-pattern.
Scope Zeroing Tips
Start Close
Begin zeroing at a shorter distance (25-50 yards) to ensure you're on paper before moving to your desired zero distance (typically 100 yards).
Use a Stable Rest
Always zero your rifle from a stable shooting position using a bench rest, sandbags, or a shooting rest to eliminate as much human error as possible.
Fire Groups
Fire 3-shot groups before making adjustments. This provides a more accurate representation of where your rifle is shooting than single shots.
Make Deliberate Adjustments
Know your scope's adjustment values (typically 1/4 MOA per click). If your group is 2 inches low at 100 yards, you'll need to adjust up 8 clicks (for a 1/4 MOA scope).
Confirm Your Zero
After making adjustments, fire another group to confirm your zero. Repeat the process until your point of impact matches your point of aim.
Document Your Settings
Once zeroed, record your settings including distance, ammunition used, and environmental conditions for future reference.
Optics Maintenance & Care
Cleaning Lenses
- Start by blowing or brushing away loose particles
- Use a lens pen or microfiber cloth for fingerprints
- For stubborn dirt, use lens cleaning solution (never household cleaners)
- Clean with gentle circular motions from center outward
Protecting Your Optics
- Always use lens caps when not in use
- Store in a dry place with silica gel packets
- Avoid extreme temperature changes
- Use a quality scope cover in harsh conditions
Regular Maintenance
- Check and tighten mount screws periodically
- Inspect O-rings and seals for damage
- Verify zero after rough handling
- Clean the exterior with a damp cloth
What to Avoid
- Never use fingers to touch lenses
- Avoid paper products (tissues, paper towels) on lenses
- Don't use acetone, alcohol, or household cleaners
- Never disassemble your scope (voids warranty)