Introduction
This manual provides instructions for the proper setup, operation, and maintenance of your UTG 1-8x28mm 30mm Compact Scope, Model SCP3-18IEBG4. This precision optic is designed for reliable performance, featuring a 30mm tube, multi-emerald coated lenses, and a robust construction that is shockproof, fogproof, and rainproof. Please read this manual thoroughly before using your scope to ensure optimal performance and safety.

Image: The UTG 1-8x28mm Compact Scope mounted on a rifle, demonstrating its compact form factor and integration.
Setup
1. Mounting the Scope
Your UTG 1-8x28mm Compact Scope comes with high-quality ACCU-SYNC Picatinny/Weaver rings for secure attachment to your firearm. Ensure the rings are properly aligned and tightened according to your firearm's specifications to prevent movement and maintain zero.
- Attach the included rings to your Picatinny or Weaver rail.
- Place the scope into the rings, ensuring proper eye relief for your shooting position.
- Level the reticle and tighten the ring screws evenly to secure the scope without over-tightening.

Image: The scope mounted on a rifle, showing the included ACCU-SYNC rings and flip-up lens covers.
2. Battery Installation for Illumination
The EZ-TAP Illumination System requires a CR2032 3V battery. Locate the battery compartment, typically on the side turret. Unscrew the cap, insert the battery with the positive (+) side facing outwards, and securely replace the cap.
Operating Instructions
1. Magnification Adjustment
The scope features a variable magnification range from 1x to 8x. Rotate the magnification ring, located near the eyepiece, to adjust the desired power. Ensure a clear sight picture at your chosen magnification.
2. Diopter Adjustment
The diopter adjustment ring, located on the eyepiece, allows you to fine-tune the reticle focus to your individual eyesight. Look through the scope at a plain background (like a clear sky) and rotate the diopter ring until the reticle appears sharp and clear.
3. EZ-TAP Illumination System
The EZ-TAP Illumination System offers 36 color options and a red/green dual-color mode. Use the two soft control buttons on the illumination turret to activate and adjust the reticle illumination.
- Press either button to turn on illumination.
- Press the 'G' button to change intensity.
- Press the 'R' button to change color.
- The 1-Click illumination memory feature recalls the last used color and brightness setting.

Image: A visual guide to the EZ-TAP 36 Color IE Illumination System, including the control buttons and a color index table.
4. Windage and Elevation Adjustment (Target Turrets)
Your scope features premium zero locking and zero resetting target turrets for precise 1/4 MOA per click adjustments. These turrets allow for accurate windage (horizontal) and elevation (vertical) corrections.
- To adjust, pull up the turret cap.
- Rotate the turret to make adjustments. Each click represents 1/4 MOA at 100 yards.
- After adjustment, push the turret cap down to lock the setting.
- To reset to zero after sighting in, pull up the turret cap, rotate it to '0', and push down to lock.
5. Parallax Adjustment (SWAT)
The Side Wheel Adjustable Turret (SWAT) allows for parallax adjustment from 10 yards to infinity. Parallax is the apparent shift in the reticle's position relative to the target when the eye is moved off-center. Adjust the SWAT until the target and reticle appear to be in the same focal plane, eliminating parallax error.
6. BG4 Glass Reticle
The scope is equipped with a BG4 glass reticle, featuring ballistic drop compensation and rangefinder markings out to 600 yards. This reticle is designed for common 5.56/.223 loadings in modern sporting rifles, aiding in accurate shot placement at various distances.

Image: Detailed diagram of the BG4 Glass Reticle, illustrating ballistic drop compensation and rangefinding capabilities.
Maintenance
1. Cleaning the Lenses
Use a soft, lint-free cloth or a lens brush to remove dust and loose debris from the lenses. For smudges or fingerprints, use a lens cleaning solution specifically designed for optics and a clean microfiber cloth. Avoid using harsh chemicals or abrasive materials, as these can damage the lens coatings.
2. General Care
- Keep the scope protected with the included flip-open lens caps when not in use.
- Store the scope in a dry, cool place, away from direct sunlight and extreme temperatures.
- Regularly check all mounting screws for tightness to ensure the scope remains securely attached and maintains zero.
- The scope is nitrogen-filled and sealed for fogproof and rainproof performance; avoid disassembling the scope, as this will void the warranty and compromise its integrity.
Troubleshooting
1. Blurred Image or Reticle
- Reticle: Adjust the diopter ring on the eyepiece until the reticle is sharp.
- Target: Adjust the parallax (SWAT) to match the distance to your target.
- Overall: Ensure lenses are clean and free from smudges or debris.
2. Inconsistent Zero / Loss of Zero
- Check all mounting screws (rings, base) to ensure they are securely tightened.
- Verify that the zero locking turrets are properly engaged after adjustment.
- Ensure consistent shooting technique and ammunition.
3. Illumination Not Working
- Check if the CR2032 battery is correctly installed with the positive (+) side facing out.
- Replace the battery with a fresh one.
- Ensure the battery cap is fully tightened to ensure proper contact.
Specifications
| Feature | Specification |
|---|---|
| Brand | UTG |
| Model Name | SCP3-18IEBG4 |
| Magnification | 1x - 8x |
| Objective Lens Diameter | 28mm |
| Tube Diameter | 30mm |
| Field of View | 99.5 degrees |
| Eye Relief | 3.4" - 3" |
| Exit Pupil | 13.0mm - 3.9mm |
| Click Value at 100 yards | 1/4" |
| Parallax Setting | 10 yds - Infinity (Side Wheel Adjustable Turret) |
| Reticle Type | BG4 Glass Reticle (Ballistic Drop Compensation) |
| Illumination | EZ-TAP 36-Color IE System (Red/Green Dual-Color Mode) |
| Battery Type | CR2032 3V |
| Material | Aluminum |
| Item Weight | 1.1 pounds |
| Mounting Type | Picatinny Mount (ACCU-SYNC rings included) |
| Environmental Protection | Shockproof, Fogproof, Rainproof (Nitrogen Filled) |
Warranty and Support
For warranty information and support, please refer to the manufacturer's official website or contact UTG customer service directly. The product's warranty description states "See manufacturer".
Included Components: UTG 1-8x28mm 30mm MRC Scope, IE, BG4 Reticle, with ACCU-SYNC rings and flip-open lens caps.
