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Butler Creek Objective Flip up lens covers

Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 25 - 45.7mm 1.8"

Fits obj Nikko Mountmaster 4x32 AO
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Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 25 45.7mm 1.8"

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

Measurement and fitting -
The millimetra/inch measure is that of the OUTSIDE of the objective and NOT the objective lens size.
Butler Creek size 25 = 45.7mm - 1.8"

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 4x32 AO


  • HK3020    Sport HD 4x32 AO (Mil Dot)
  • HK3002    Sport HD 4x32 AO (30/30)
  • HK3013    Sport HD IR 2-7x32 AO (Mil Dot IR)
  • HK4020    Sidewinder 4.5-14x38 (SR6)
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Brand Butler Creek
Code NW862
Weight 0.05kg
MPN 30250