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Butler Creek Objective Flip up lens covers

Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 33 - 51.9mm - 2.043"

Fits obj Nikko Mountmaster 4x40, 6x40 and 3-9x40 - AO types
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Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 33 - 51.9mm / 2.043" 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 33 = 51.9mm - 2.043"

Measurement and fitting -

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

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.

Known to fit:

Nikko Stirling Mountmaster 4x40 AO and 3-9x40 AO and AO IR

Hawke - Varmint SF   

  • HK5132    Varmint SF 2.5-10x44 (1/2 MD)
  • HK5133    Varmint SF 3-12x44 (1/2 MD)
  • HK5134    Varmint SF 4-16x44 (1/2 MD)
  • HK5135    Varmint SF 6-24x44 (1/2 MD)
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Brand Butler Creek
Code NW863
Weight 0.05kg
MPN 30330