Zeroing the LAR 15

[zenshootist]

I've missed shooting rifle since I left the Army so picked up a Rock River Arms NM chambered in 223/5.56. First thing I did was a field strip to check it out. One thing I did notice was the rear sight - it still has the left/right windage knob but there's also an elevation knob on the rear sight.

Using the standard zero targets with grid, I am accustomed to moving left/right with the rear sight and elevation at the front.

What's the advantage of using the rear elevation, other than maybe I don't have a nail to adjust the front (or one of those nifty front sight adjustment tools that people say I can't do without...)?

 

[creeper1956]

So it's been awhile for you huh? What you've got is the AR15 "A2" sight... what you had issued to you was the M16 "A1" sight. The A2 sight was developed for a 300 yard zero with M855 ammo. This webpage will tell you how to, should you choose to, set up that 300 yd battlefield zero and use the A2 sights to your benefit.

 

[readyeddy]

There is also the revised improved battlesight zero.

http://www.ar15.com/forums/t_3_18/3...th_down_loadable_50_yard_zeroing_target_.html