Aimpoint compm4 front lens suppose to be crooked?


December 11, 2009, 08:37 PM
I just received a used compm4 sight I purchased from an auction.
It is the first Aimpoint sight I have ever physically seen/touched none to be had locally.
The sight has either been damaged during shipping (it arrived loose in a crappy usps "post it" bag) or it is not the one pictured on the auction.
Aside from the body/adj. cover/mount dents and scraped anodizing, the severe cant of the front lens really caught my attention.
Is the front lens on Aimpoints usually canted/crooked/uneven to the sight body?
The optic seems clear enough without distortion.
Did notice that as the dot intensity is turned up red light blooms around edges of the lens.
My Eotech 512revf does not do this.
I have never owned a scope that had canted/crooked lenses to scope body.
I have included photo's to help clarify my question.
Please let me know.

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December 11, 2009, 08:40 PM
Can't really tell anything from the pictures, but no, the lens should not be canted in the scope body.

December 11, 2009, 08:42 PM
I have a CompM2 which does not have a canted lense; however, the dot bloom is normal on Aimpoints. The idea behind the adjustable brightness is for you to adjust it based on light conditions so you get a crisp 4 moa dot with the CompM2 or in your case with the CompM4 a crisp 2 moa dot.

In any event, i'd mount it and see if it zeroes before attempting any warranty work or returns. If it works and the lens is slightly canted i'd say good enough.

December 11, 2009, 09:09 PM

The photo's show two different positions around the front lens - they are on opposite sides from each other.
One is about 11 o'clock and the other 5 o'clock.
I created the red lines in the photo's to show the distance from the edge/surface of the lens to a lip on the body/tube.
The difference from the two positions to the lip of the body/tube is about0.175 of an inch -about 1/8th inch

December 11, 2009, 09:29 PM
Call Aimpoint.

December 11, 2009, 10:38 PM

Good idea.
I just sent Aimpoint an email with the photo's.
I will try to call if they do not respond to the email.
I will post what answers I get.

December 11, 2009, 10:48 PM
Can you post a pic of the serial number area and of the inside of the battery compartment?


December 12, 2009, 11:03 AM

I have included pictures of the battery compartment and serial number.
Is the to identify if its a fake?
I also took the time to try to measure and better photograph the difference of the lens setback from the body lip.
Let me know what you think.

December 12, 2009, 12:15 PM
My two are canted. Work great. Nice crisp dots unless you turn them up too much.

December 12, 2009, 02:24 PM
Is the to identify if its a fake?

That's what I was thinking. The fakes usually get the inside of the battery compartment and lettering style wrong. Yous looks like mine, which I bought directly from Larue.

I've got a Killflash on mine so I can't measure the front lens. I was thinking that an angled front lens would be less likely to reflect glint back at a hostile viewer. BSW

December 12, 2009, 02:31 PM
I was going to post and tell you that you probably had a fake. Then I looked at my Comp M3. It has a canted lens as well.

My guess would be that it has something to do with keeping light from reflecting directly back to your target and giving away your position.

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