SENTRY Scopecoat® Selecting the correct size. Scopecoat® protective covers ft a variety of optics. When using the right size to cover your optic measure the overall length and the outside diameter of the scopes objective. Our covers stretch approximately 10% beyond their stated size. This will allow you to better ft a cover to your optic while providing maximum protection.

Measuring Your Optic: Optic sizes are listed by overall length and objective sizes. The length is measured in inches and the objective is measured in millimeters.

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Step 1: Measure the overall length of the scope, including the size of the sunshade, if applicable. (Measurement "A") 
Step 2: Measure the outside diameter of the objective in millimeters. The objective end of the scope is the end that you see out of, or end furthest from your eye. (Measurement "B")
Step 3: Measure the turrets (adjustment knobs). We consider turrets 0.75” or more to be “tall turrets” for these models we suggest the XP-6 for complete coverage. (Measurement "C")

Step 4: Find the Scopecoat® size closest to your optic size below. 


Standard Scopecoat® protective covers are designed to fit scopes with standard turret heights and the XP-6 covers are designed for tall turrets and added protection *

SENTRY 3MM STANDARD SCOPECOATS®

Mini 20 -Length: 5.75" Diameter: 20mm 

Mini 30 - Length: 5.75" Diameter 30mm

Mini Long - Length: 6.75" Diameter: 20mm

Small - Length: 8.50" Diameter: 20mm

Medium - Length: 10.50" Diameter: 30mm

Large - Length: 12.50" Diameter: 42mm

Large 50 - Length: 12.50" Diameter: 50mm

Large 1452 - Length: 14.0" Diameter: 52mm

Extra Large - Length: 15.50" Diameter 60mm