Butler Creek Objective Flip up lens covers

Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 39 - 56.4mm - 2.22"

£16.45

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Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 39 - 56.4mm / 2.22" outer lens case diameter fit

Advert is for ONE Objective lens cover NOT a pair.

Butler Creeks legendary Flip-Open Scope Covers form an airtight seal against the elements, but silently hinge open at the touch of a finger.

This type is for the objective lens (AKA the "big end" of the scope) and features a large push button for quick spring loaded opening so you can keep your optics protected until the perfect shot presents itself.

Key Features:

Water-tight friction, anchors the cover to your scope
Airtight semi-o-ring keeps out dust and moisture
Performs from -40° to 120° F
Quiet opening design won't scare away game or viewing subjects.
Weighs less than an ounce!
Easily opens with touch of thumb
Suitable for left or right handed use

Butler Creek size 39 = 56.4mm - 2.22"

The millimetre / inch measure is that of the OUTSIDE of the objective casing and NOT the objective lens size.

So for example, if your scope is a 3-9x40 that means the objective lens is 40mm in diameter - NOT the outer outside casing. The casing will add anywhere from 5-15mm depending on make, model and features such as AO.

Measurement and fitting -

Fitting -

There is a little bit of flexibility in sizing though too far either way may result in too tight or loose.
Too loose is not so bad, you can shim with tape. Too tight is not good though so please be very precise with your measures.