LMT (A2) AR Rear Sight Adjustment

[SG4247]

Anyone have an estimate of what an equivalent MOA of one click of the elevation adjustment would be? This style is marked 6/3.

Any info will help!

 

[Doug Beach]

What is the sight radius, and how many thousandths does one click move the sight?

 

[SG4247]

Lemme check...

 

[SG4247]

.002” elevation change per click, 20” sight radius.

Tan of “a” = .002”/20”

“a” degrees x 60 min/degree

.006 min of arc/click?

 

[SG4247]

Oops, calculator set on Rad!

Answer = .34 MOA/click?

 

[Doug Beach]

In “rifle moa” (1” per 100 yards), I get .36 min / click. Difference is academic. 1/3rd minute clicks it is.

 

[SG4247]

Thank you!

 

[akajun]

Usgi a2 sights were roughly 1/3 or 2/3 ( I can’t remember which it’s been a long time) moa per click , they are actually in millradians hence the metric markings.
you could akways replace them with a NM sight from Rra and set it up as 1/2 or 1/4 moa

 

[chapstix97]

6/3 rear sites

20 inch barrel ar15 barrel site radius
1/2 moa elevation and 1/2 moa windage
14 inch barrel ar15 barrel site radius
3/4 moa elevation and 1/2 moa windage

 

[SG4247]

Thanks that is helpful!