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Butler Creek Objective Flip up lens covers

Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 27 - 46.7mm - 1.84"

Fits obj of certain Hawke Sport HD 40mm and Panorama 40mm models. See list in main description.
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Butler Creek Flip Open Rifle Scope Objective Lens Cover Size 27 - 46.7mm 1.84"

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 27 = 46.7mm - 1.84"

Measurement and fitting -
The millimetre/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:


  • HK3032 Sport HD IR Sport HD IR 4-12x40 (30/30 Centre Cross IR)  
  • HK3031 Sport HD IR 3-9x40 (30/30 Centre Cross IR)
  • HK5156 Panorama EV 3-9x40 (L4A Dot)
  • HK5160 Panorama EV 3-9x40 (10x Half MD)
  • HK5162 Panorama EV 4-12x40 (10x Half MD)
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Brand Butler Creek
Code NW900
Weight 0.05kg
MPN 30430