Leupold Alumina Flip Back Lens Cover - Large EP - Rugged Magnetic

In this review the Leupold Alumina Flip-Back Lens Cover - Large EP is presented as a rugged, purpose-built option for shooters and hunters who use Leupold 36mm eyepieces. The bottom line: this cover is for anyone who wants a durable, low-profile ocular cover that opens quickly and seals tightly against weather. Our review finds its strongest point is the machined 6061-T6 aluminum construction combined with powerful neodymium magnets and triple O-ring seals that keep moisture and debris out while remaining easy to operate in the field.

Key Features

• Material and build: Constructed from 6061-T6 aircraft grade aluminum for a durable, lightweight cover that resists deformation and stands up to field use.
• Magnetic closure: Built-in neodymium magnets hold the cover securely closed to prevent dust and water ingress while remaining simple to open with one hand.
• Weather protection: Triple O-ring seals provide a tight barrier against rain, snow, and grit for reliable protection of the eyepiece.
• Compatibility: Designed for Leupold 36mm eyepieces and specifically compatible with VX-5HD, VX-6, VX-6HD and Mark 5HD riflescopes for a proper fit on those models.
• Low-profile open position: Precisely machined hinge and shape keep the cover tucked out of the way when flipped open so it does not interfere with viewing.
• Rotatable design: The round ocular model can be rotated to open in any direction, letting users set the preferred hinge orientation.

Who It's For

The Alumina Flip-Back is best suited to hunters, target shooters, and optics users who need a rugged ocular cover for Leupold scopes made after 2004 with 36mm eyepieces. It appeals to those who value a metal, low-profile solution that performs well in wet and dirty conditions and who appreciate quick one-handed operation.

People who prefer softer rubber covers or who have non-Leupold or non-36mm eyepieces should look elsewhere. Also, those uncomfortable with a metal retrofit or who require a permanently affixed lens cap may find alternatives more appropriate.

Pros & Cons

Pros

• Solid, machined 6061-T6 aluminum construction gives long-term durability and a premium feel.
• Neodymium magnetic closure combined with triple O-ring seals offers strong weather resistance and secure shut.
• Rotatable round design and low-profile open position provide flexible setup and unobstructed viewing when deployed.

Cons

• Some users report magnetic components can loosen over time, so periodic checks are advisable.
• Retrofit threading is required for many pre-2004 scopes and may need professional installation or a paid retrofit option.

Specifications

Brand	Leupold
Compatible eyepiece size	36mm
Compatible models	VX-5HD, VX-6, VX-6HD, Mark 5HD
Material	6061-T6 aircraft grade aluminum
Sealing	Triple O-ring seals
Closure	Neodymium magnetic closure
Included components	Cover

Our Verdict

The Leupold Alumina Flip-Back Lens Cover - Large EP is a worthwhile accessory for owners of compatible Leupold scopes who need durable, weatherproof ocular protection. It offers solid construction, effective sealing, and a convenient flip-back action that keeps the cover out of the way when shooting, making it good value for hunters and shooters who demand reliability in the field.

Frequently Asked Questions

Will this fit my Leupold scope?
It fits 36mm eyepieces and is designed for VX-5HD, VX-6, VX-6HD and Mark 5HD; many scopes made before 2004 can be retrofitted to accept Alumina accessories.

Does it keep out rain and snow?
Yes, the combination of neodymium magnets and triple O-ring seals provides strong protection against rain, snow and debris.

Is installation difficult?
Installation is typically straightforward on compatible scopes, but older Leupold models may require threading or a retrofit service to accept the cover.