Even with adjusting the drag on the focus knob on ATN's X-Sight II scopes, they still require a pinch or grab with two fingers to change the focus. These focus knobs allow for one finger adjustments, improving the ergonomics and making your response time quicker.

They work equally well in stalk, blind or stand hunting.

Knobs can be painted using a plastic primer before final color coat.



If you're mounting your IR illuminator on the side of your ATN scope, there may be some clearance issues with the original knob and the light.

 To determine if there are any clearance issues, measure from the right of your illuminator bell to the left of your knob.

I have confirmed that the T38 Evolva and the ATN IR850 Pro are large enough to need the smaller knob.



If the measurement is 5/8 inch or more, the 7 Star knob will fit without hitting the illuminator.

If it's between 1/2 and 5/8 inch, then the illuminator will interfere with the original 7 star sized knobs, and you should order the smaller 6 Star knob or adjust the position of the illuminator forwards or backwards to a position that doesn't hit the knob.


Current Stock:
3.00 (in)
1.00 (in)
3.00 (in)
Knob Style *

Bulk Pricing Available

  • Buy 2 - 4 and get 10% off
  • Buy 5 or above and get 20% off

Reviews Hide Reviews

Love it!

Definitely helps especially in cold weather when the knob can get a little tight. Great product at a dirt cheap price. OVERDRIVE OUTDOORS APPROVED!

Perfect Company! Perfect Products!

So glad I found the Blackcatworks website. I originally messaged Corey @ Blackcatworks about posting to the UK and bundling each item as a single postage cost. He was extremely helpful and sorted out my order very quickly. He also posted it same day and 9 or 10 days later it was in the UK. Fastest item I've had for USA in a long while. As for the products, well I couldn't be happier. The difference between the X-Sight HD with and without is as the saying goes the difference between night and day. It really is that extreme. The ability to look at a target and stay on track while adjusting the focus makes a world of difference. Previously, I'd go to adjust the focus and the stiffness of the adjuster would cause me to go off target. To the point I was thinking of selling my scope because I was that fed up of it but now its a real pleasure to use again. Shame ATN couldn't have supplied something like this originally but as they don't I'd recommend blackcatworks modification hands down.

7 star

Well made, simple and works great. Fast shipping. Excellent value!. Thank you!

Focus Knob

Could not get the scope to work without it, great tool that should come with scope as standard.


Great addition tomy scope!

ATN X-Sight II focus knob

Prior to installing the focus knob on my X-Sight II I found it difficult to focus so most of the time it was out of focus. Now it's easy to focus which makes a big difference to my shooting.

Adjustment Knob

Tight fit and does the job well!

focus knob

a must only way to go a must have for x sight 2 makes it soooo much easier to focus