Calguns.net  

Home My iTrader Join the NRA Donate to CGSSA Sponsors CGN Google Search
CA Semiauto Ban(AW)ID Flowchart CA Handgun Ban ID Flowchart CA Shotgun Ban ID Flowchart
Go Back   Calguns.net > FIREARMS DISCUSSIONS > Centerfire Rifles - Semiautomatic or Gas Operated
Register FAQ Members List Calendar Mark Forums Read

Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

Reply
 
Thread Tools Display Modes
  #1  
Old 05-11-2009, 11:18 AM
aermotor's Avatar
aermotor aermotor is offline
CGN/CGSSA Contributor
CGN Contributor
 
Join Date: Apr 2009
Location: Los Angeles, CA
Posts: 2,360
iTrader: 38 / 100%
Default Proper way to use/adjust AR15 Iron Sights?

I've searched a bunch online and here and can't really find the "How-To" for using iron sights and adjusting for distance, so I'm wondering if anyone can point me in the right direction or explain it since I'm new to them and don't know at all.
It starts at 6/3 meaning 300 yards/m, correct? Is that lowest you can set? How does it work for 100-200

It's two clicks to "Z" which is what? And then four clicks to 4 which is 400 yards?

Then from there it's eight clicks to 5 and ten clicks to #6
Any help would be great to better understand the system, thanks!
Reply With Quote
  #2  
Old 05-11-2009, 11:22 AM
redline redline is offline
Member
 
Join Date: Mar 2009
Location: San Mateo, CA
Posts: 233
iTrader: 27 / 100%
Default

Here's a link I found useful. YMMV

http://www.ar15.com/forums/topic.html?b=3&f=18&t=328143
Reply With Quote
  #3  
Old 05-11-2009, 11:40 AM
dirtykoala dirtykoala is offline
Banned
 
Join Date: Dec 2008
Posts: 3,486
iTrader: 9 / 100%
Default

redlines info along with this target should help.

http://www.bobdbob.com/~deneb/doc/ta...2-25m-zero.pdf

what we learned in boot camp is that at 100 yrds you're just going to have to aim low. (we never qualified at that short of a range) i recently confirmed this with a range instructor. the "z" is for zero im pretty sure. i printed out a few copies of the zeroing target that i posted above and it worked really well. but at 100 yrds i have to aim about 6 inches low +/-. the 6/3 is pretty much as low as you can go, you might be able to get 1 or 2 clicks further, but i think on mine 6/3 is the lowest, 30 and 300 yrds have the same point of impact. after you zero, yes the "4" is 400 yrds, the "5" is 500...
Reply With Quote
  #4  
Old 05-11-2009, 11:42 AM
NSR500 NSR500 is offline
Banned
 
Join Date: Aug 2006
Location: Houston & SF Bay Area
Posts: 19,544
iTrader: 2 / 100%
Default

Elevation is adjusted with the front whilst the rear is the presets and windage only. Using the instructions from the link above is the rest you need.
Reply With Quote
  #5  
Old 05-11-2009, 11:46 AM
dirtykoala dirtykoala is offline
Banned
 
Join Date: Dec 2008
Posts: 3,486
iTrader: 9 / 100%
Default

you should only adjust your front sight once though, for initial zeroing, the presets on the rear should be accurate beyond that. if you really wanted to adjust your front sight to match up with your 6/3 on the rear to be accurate at 100yrds i guess you could, but then your presets on the rear would be completely off
Reply With Quote
  #6  
Old 05-11-2009, 11:57 AM
sigguy552 sigguy552 is offline
Member
 
Join Date: Jun 2003
Location: San Jose/CA
Posts: 186
iTrader: 9 / 100%
Default

Please keep in mind this is for M16A2 only. Most AR-15 bbls are not 1:7 twist 20 inch.
Reply With Quote
  #7  
Old 05-11-2009, 1:27 PM
aermotor's Avatar
aermotor aermotor is offline
CGN/CGSSA Contributor
CGN Contributor
 
Join Date: Apr 2009
Location: Los Angeles, CA
Posts: 2,360
iTrader: 38 / 100%
Default

That's interesting the default lowest setup possible is 300, is that the same as what the Military is issued? Some good tips for getting it lower and zeroing, although it should be factory zeroed so looks like I need to hit the range and see. My upper is a 1/9 20 inch, so not sure how that translates, but I get that it's different.

I see why it's six clicks to 400, eight clicks to 500 and ten clicks to 600 because the drop-off increases just a bit more per 100 so you just get bigger divisions as they go up.
Reply With Quote
  #8  
Old 05-11-2009, 1:52 PM
NSR500 NSR500 is offline
Banned
 
Join Date: Aug 2006
Location: Houston & SF Bay Area
Posts: 19,544
iTrader: 2 / 100%
Default

Not all uppers/guns are factory zeroed. I have one that shot 6" high out of the box, while another rifle was dead on.
Reply With Quote
  #9  
Old 05-11-2009, 2:47 PM
aermotor's Avatar
aermotor aermotor is offline
CGN/CGSSA Contributor
CGN Contributor
 
Join Date: Apr 2009
Location: Los Angeles, CA
Posts: 2,360
iTrader: 38 / 100%
Default

At 300 meters or what distance?
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -8. The time now is 3:25 PM.




Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Proudly hosted by GeoVario the Premier 2A host.
Calguns.net, the 'Calguns' name and all associated variants and logos are ® Trademark and © Copyright 2002-2016, Calguns.net an Incorporated Company All Rights Reserved.