Cometa Rear Sight Adjustment Nut – PGCOMRSIGHTNUT
Replacement nut for the rear-sight mechanism on compatible Cometa air rifles. It works with the corresponding sight screw to retain or adjust the rear sight.
Ideal for replacing a missing, damaged, worn, or stripped original nut.
This listing is for the rear-sight nut only. The sight, screws, spring, and other components are not included.
Key Features
- Replacement part for compatible Cometa rear sights
- Works with the corresponding rear-sight screw
- Helps retain the sight adjustment mechanism
- Suitable for repairing a loose or incomplete rear sight
- Factory-style metal replacement component
- Calibre-independent part
Product Specifications
| Specification | Details |
|---|---|
| Product Code | PGCOMRSIGHTNUT |
| Brand | Cometa |
| Product Type | Rear-sight nut |
| Application | Sight adjustment or retention |
| Position | Rear-sight assembly |
| Material | Metal |
| Finish | May vary by production batch |
| Calibre | Not calibre-specific |
| Quantity | One nut |
| Rear Sight Included | No |
Compatibility
May fit selected Cometa air rifles, including certain versions of:
- Cometa 220
- Cometa 300
- Cometa Fenix 400
- Cometa Fusion
- Other models using the same rear-sight mechanism
Cometa has used different rear-sight assemblies across its model range. The complete 200404 rear sight is commonly listed for Cometa 220, 300 and 400 rifles. Some versions include an adjustment screw, nut, spring, and two fixing screws. Cometa rear-sight assembly information
Compatibility must be confirmed using the original part, rifle model, sight design, thread diameter, and thread pitch.
Important Compatibility Notice
This nut must match the corresponding rear-sight screw. Do not select it using the rifle calibre alone.
For assistance, please provide:
- Exact Cometa rifle model
- Rifle serial number or approximate production year
- Clear photograph of the rear sight
- Photograph or measurements of the original nut and screw
Installation
Make sure the air rifle is unloaded and uncocked before working on the sight. Install the nut carefully to avoid cross-threading.
Do not overtighten it. Excessive force may damage the nut, adjustment screw, or sight housing. Confirm that the sight operates correctly and sight-in the rifle again after installation.
Package Contents
- 1 × Cometa rear-sight nut
Please Note
Product images may differ slightly from the supplied component. Manufacturer specifications and finishes may change without notice.
This item may require special ordering. Estimated procurement time is 3–10 working days, subject to supplier availability. Stock availability may change hourly. A money-back guarantee applies if the correct item cannot be supplied.

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As a result of our extensive experience in manufacturing airguns and the constant effort to innovate our products, we are able to offer high quality airguns. All components of the airguns are manufactured in Spain. In particular, the main parts of the airguns - the barrel, stock and tube - are manufactured and controlled by Cometa itself. All the airguns are individually tested and calibrated; the speed is controlled under the laws of each country.
 
 
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