The scope has FPS markings so that you can set the power.
Yes. Once a scope has been set for a speed rating, it will be a fixed magnification. If you alter the magnification/speed, it will negatively affect the reticle subtensions/drops.
The XB1 features a fast-focus eyepiece
No rings are sold separately
We recommend medium height rings - our model # is 22113
The XB1 1.5-5x32 is a 1" tube.
This scope has a matte black anodized finish.
I would recommend reaching out to Hawke Sport Optics directly for a replacement as we do not carry any replacement caps that would be compatible. Their contact information can be found linked below:
https://us.hawkeoptics.com/contact.html
Yes, the Hawke 1.5-5x32 IR Crossbow Scope w/ Illuminated SR Reticle should work fine with the Air Javelin.
The XB1 is designed to be zeroed at 20 yards. Depending on velocity, the point of impact difference between 10 and 20 yards is typically less than 1 inch.