Looking for the best 37–42mm scope lens covers to keep your optic protected and ready?
I offer a curated list of top covers that give you a clean, clear, and reliable shooting experience every time.
Finding the right 37–42mm scope lens cover should feel simple. It should fit tight. It should protect your optic every time. When you pick the right cover, your scope stays clean, clear, and ready for the moment you need it most.
You know the feeling of lifting your rifle and seeing a spotless lens. No dust. No scratches. Just a sharp, clean view that makes every shot feel smooth.
That’s why choosing the best 37–42mm scope lens cover matters. It gives you trust in your gear and confidence in your setup. And once you find the perfect fit, you’ll never want to shoot without it.
List of Top 10 37-42mm Scope Lens Covers
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Monstrum Rubberized Flip-Up Rifle Scope Lens Covers (Eyepiece | 37-42 mm Outside Diameter) |
This product is perfect for shooters who want simple, strong protection for their scope. It suits anyone who needs a tight, easy flip-up cover that keeps dust away. |
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Monstrum Ultra Series Flip-Up Scope Lens Covers (Eyepiece | 37-42 mm Diameter) |
Perfect for hunters, target shooters, and anyone who wants a clean, safe, and ready-to-use scope. It’s great for people who want a fast flip-up cover that fits tight and keeps their lens clear. |
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Monstrum Pro Series Flip-Up Scope Lens Covers (Eyepiece | 37-42 mm oustide Diameter) |
This product is perfect for hunters, target shooters, and anyone who wants to keep their scope clean, safe, and ready at all times. It’s great for people who want a tight, reliable fit and a fast flip-up action. |
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Monstrum Rubberized Flip-Up Rifle Scope Lens Covers (Objective Bell | 37-42 mm Outside Diameter) |
These Monstrum Rubberized Flip-Up Rifle Scope Lens Covers are perfect for hunters and shooters who want to protect their rifle scope lenses from dust and damage. They are easy to use and fit snugly, keeping your scope ready for action. |
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Arken Optics Rifle Scope Caps Flip Up Lens Covers 37-42mm&55-59mm |
This is perfect for shooters who want simple, strong, and easy lens protection. It suits anyone who needs fast flip-up covers that fit their Arken scopes with no fuss. |
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Monstrum Ultra Series Flip-Up Scope Lens Covers (Objective Bell | 37-42 mm inch Diameter) |
Perfect for hunters, target shooters, and anyone who wants their scope to stay clean, safe, and ready in a snap. Great for people who want a tight fit and a quick flip-up cover that works every time. |
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Monstrum Pro Series Flip-Up Scope Lens Covers (Objective Bell | 37-42 mm inch oustide Diameter) |
Monstrum Pro Series Flip-Up Scope Lens Covers are perfect for hunters, shooters, and outdoor enthusiasts who want to keep their scope lenses clean and protected. These easy-to-use covers are ideal for anyone with a scope needing reliable protection during outdoor activities. |
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Monstrum Pro Series Flip-Up Scope Lens Cover with Detachable Honeycomb ARD (Objective Bell | 37-42 mm inch oustide Diameter) |
This product is perfect for hunters, target shooters, and anyone who wants to keep their scope clean, safe, and hidden from glare. It works great for people who want a strong, easy flip-up cover that stays tight and protects their view. |
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Butler Creek Element Scope Cap Eye Piece for 37-42mm Black EEP1 |
This product is perfect for hunters who want strong, simple, all‑weather protection for their scope. It’s great for anyone who needs a rugged, easy-fit cap that keeps their view clear in any condition. |
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Butler Creek Flip-Open Eyepiece Scope Cover, Size 16 (1.66-Inch, 42.2mm) , Black |
This cover is perfect for hunters and outdoor shooters who want quick, smooth use in any weather. It suits anyone who needs a light, fast, and silent scope cover. |
Detailed Reviews
This guide picks the top 37–42mm scope lens covers with care and skill. Each choice is based on real use, strong performance, and clear value. You can trust this guide to point you to the best options for your setup. Read on and discover the covers that truly stand out.
1. Monstrum Rubberized Flip-Up Rifle Scope Lens Covers (Eyepiece | 37-42 mm Outside Diameter)
Monstrum Rubberized Flip‑Up Lens Covers keep your scope safe and clean. They fit tight around the outside diameter of your eyepiece for a secure hold.
The spring-loaded flip-up design opens fast with one touch. The rubberized body shields your lens from dust and scratches.
They fit snug. They open smooth. They protect well.
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Perfect For:
This product is perfect for shooters who want simple, strong protection for their scope. It suits anyone who needs a tight, easy flip-up cover that keeps dust away.
Ready to Purchase?
2. Monstrum Ultra Series Flip-Up Scope Lens Covers (Eyepiece | 37-42 mm Diameter)
Monstrum Ultra Series Flip-Up Scope Lens Covers keep your scope safe and clean. They fit tight and stay strong with a rubberized sleeve built for real use.
They flip open fast. They lock shut tight. They let you see through the clear cap even when closed.
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Perfect For:
Perfect for hunters, target shooters, and anyone who wants a clean, safe, and ready-to-use scope. It’s great for people who want a fast flip-up cover that fits tight and keeps their lens clear.
Ready to Purchase?
3. Monstrum Pro Series Flip-Up Scope Lens Covers (Eyepiece | 37-42 mm oustide Diameter)
Monstrum Pro Series Flip-Up Scope Lens Covers keep your glass clean and safe. The rubberized sleeves fit tight and stay strong.
They flip open fast. They lock down tight. They guard your scope from harm.
| Pros | Cons |
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Perfect For:
This product is perfect for hunters, target shooters, and anyone who wants to keep their scope clean, safe, and ready at all times. It’s great for people who want a tight, reliable fit and a fast flip-up action.
Ready to Purchase?
4. Monstrum Rubberized Flip-Up Rifle Scope Lens Covers (Objective Bell | 37-42 mm Outside Diameter)
Keep your rifle scope lenses safe with the Monstrum Rubberized Flip-Up Lens Covers. These covers protect against dust and abrasion, ensuring clear vision every time.
Measure carefully for the right fit. Use the sizing chart and video for help. Each package includes one cover.
The spring-loaded flip-up design is easy to use. It opens quickly and closes tightly, keeping your scope ready for action.
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Perfect For:
These Monstrum Rubberized Flip-Up Rifle Scope Lens Covers are perfect for hunters and shooters who want to protect their rifle scope lenses from dust and damage. They are easy to use and fit snugly, keeping your scope ready for action.
Ready to Purchase?
5. Arken Optics Rifle Scope Caps Flip Up Lens Covers 37-42mm&55-59mm
Strong fit. Fast use. Clear view.
These flip-up caps guard your scope. They keep your lens safe in any setting.
Each set fits a wide range of Arken Optics scopes. You get a snug, steady hold.
The caps open smooth and stay firm. Your lens stays clean and ready.
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Perfect For:
This is perfect for shooters who want simple, strong, and easy lens protection. It suits anyone who needs fast flip-up covers that fit their Arken scopes with no fuss.
Ready to Purchase?
6. Monstrum Ultra Series Flip-Up Scope Lens Covers (Objective Bell | 37-42 mm inch Diameter)
Monstrum Ultra Series Flip-Up Scope Lens Covers keep your optic clean and safe. They fit tight and stay strong with a tough rubberized sleeve.
They flip open fast. They lock down tight. They let you see through the clear cap even when closed.
| Pros | Cons |
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Perfect For:
Perfect for hunters, target shooters, and anyone who wants their scope to stay clean, safe, and ready in a snap. Great for people who want a tight fit and a quick flip-up cover that works every time.
Ready to Purchase?
7. Monstrum Pro Series Flip-Up Scope Lens Covers (Objective Bell | 37-42 mm inch oustide Diameter)
Keep your scope lenses clean and damage-free with Monstrum Pro Series Flip-Up Scope Lens Covers. These covers are easy to use and protect your glass. They fit snugly and securely on your scope.
The rubberized sleeves are durable and resilient, designed to fit scopes with 37-42 mm outside diameter. Spring-loaded flip-up caps open with a quick thumb flick and stay secure when not in use.
Before buying, measure your scope carefully. Use the sizing guide and video to ensure the perfect fit. Choose the right size for maximum protection.
| Pros | Cons |
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Perfect For:
Monstrum Pro Series Flip-Up Scope Lens Covers are perfect for hunters, shooters, and outdoor enthusiasts who want to keep their scope lenses clean and protected. These easy-to-use covers are ideal for anyone with a scope needing reliable protection during outdoor activities.
Ready to Purchase?
8. Monstrum Pro Series Flip-Up Scope Lens Cover with Detachable Honeycomb ARD (Objective Bell | 37-42 mm inch oustide Diameter)
Keep your scope safe with the Monstrum Pro Series Flip‑Up Lens Cover. It fits tight and stays strong.
It keeps your lens clean. It blocks glare with the honeycomb cover. It flips open fast.
The rubber sleeve holds firm. The cover snaps shut smooth. The fit stays solid.
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Perfect For:
This product is perfect for hunters, target shooters, and anyone who wants to keep their scope clean, safe, and hidden from glare. It works great for people who want a strong, easy flip-up cover that stays tight and protects their view.
Ready to Purchase?
9. Butler Creek Element Scope Cap Eye Piece for 37-42mm Black EEP1
The Butler Creek Element Scope Cap keeps your lens safe in tough weather. It fits well and stays tight. It works in heat, cold, and rough use.
You get three disks for clear sight in any condition. The black disk cuts bright light. The clear disk lets you see your reticle when the cap is closed.
The rubber sleeve stretches to fit many scopes. The multi‑fit design covers 37–42mm sizes.
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Perfect For:
This product is perfect for hunters who want strong, simple, all‑weather protection for their scope. It’s great for anyone who needs a rugged, easy-fit cap that keeps their view clear in any condition.
Ready to Purchase?
10. Butler Creek Flip-Open Eyepiece Scope Cover, Size 16 (1.66-Inch, 42.2mm) , Black
This cover is fast. This cover is light. This cover is ready.
It flips open with a quick thumb tap. It stays quiet with silent spring hinges.
It works in tough heat. It works in deep cold. It weighs almost nothing.
| Pros | Cons |
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Perfect For:
This cover is perfect for hunters and outdoor shooters who want quick, smooth use in any weather. It suits anyone who needs a light, fast, and silent scope cover.
Ready to Purchase?
Buying Guide
You want a cover that fits tight. You want a lens that stays clean. You want gear you can trust.
When your scope lifts smooth and your view stays clear, it feels good.
That clean lens gives you calm, focus, and control.
Factors to Consider When Buying a 37–42mm Scope Lens Cover
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Fit Size:
Measure the outside diameter of your scope. Pick a cover that fits snug. A tight fit keeps your lens safe. -
Material Quality:
Choose rubberized sleeves for a strong hold. They stretch well and stay firm. They protect your lens from bumps. -
Flip‑Up Action:
Look for spring‑loaded caps. They open fast with one touch. They close tight to keep dust out. -
Clear‑View Option:
Some covers have a clear cap. You can see your reticle even when the cover is closed. It keeps your view ready. -
Weather Strength:
Pick covers that work in heat and cold. A tough hinge stays smooth. A strong sleeve stays tight. -
Protection Level:
A good cover blocks dust and scratches. Some add glare control with honeycomb inserts. More protection means cleaner glass. -
Ease of Use:
You want a cover that opens smooth. You want it to close firm. Simple use makes shooting easier. -
Durability:
Look for covers built for real use. Strong hinges last longer. Thick rubber sleeves stay solid. -
Brand Options:
Brands like Monstrum, Arken Optics, and Butler Creek offer trusted covers. Each has tight fits and smooth action. -
Single or Set:
Some covers come alone. Some come in pairs. Choose what matches your scope setup.