LVPO's and risers- Necessary?

[Ponder_MD]

If I want to add an LVPO to a flat-top AR with an A2 front sight, do I need a riser or will the front sight "disappear?"
If a riser is advisable, how tall does it need to be?

 

[trickg]

If I want to add an LVPO to a flat-top AR with an A2 front sight, do I need a riser or will the front sight "disappear?"
If a riser is advisable, how tall does it need to be?

I had a red dot on an AR with the same setup - I never really noticed the front sight and I'd tend to think that it would be a non-issue.

If you're going to mount an LPVO on an AR, you're going to want a mount that brings it up off of the flat top a bit anyway.

I have two ARs with LPVOs on them, and the one with the taller scope mount is actually better because it falls in the line of sight much easier when the rifle is on the shoulder. I have this mount (yes, I realize it's super cheap and not something I should bet my life on, but it works well enough for now) and it's almost the perfect height, even though it seems a bit tall to look at it.

 

[outrider58]

It will disappear.

It will disappear at around 3x. Below that, it will be visible.

 

[Ponder_MD]

Both responses are great. The high mount is inexpensive and worth the risk of trying out and if I don't like it, I can try something lower and hopefully the front post will blur out.

I have an old BSA red dot. I tried it out and it was useless. By the time I started getting it dialed in approaching the center of the target, the dot was well onto the triangular support of the front sight. It needs a riser or something.

 

[outrider58]

I had a red dot on an AR with the same setup - I never really noticed the front sight and I'd tend to think that it would be a non-issue.

If you're going to mount an LPVO on an AR, you're going to want a mount that brings it up off of the flat top a bit anyway.

I have two ARs with LPVOs on them, and the one with the taller scope mount is actually better because it falls in the line of sight much easier when the rifle is on the shoulder. I have this mount (yes, I realize it's super cheap and not something I should bet my life on, but it works well enough for now) and it's almost the perfect height, even though it seems a bit tall to look at it.

That's about the right height. It leaves just enough room for a BUIS incase your scope sh!ts the bed.