AR15 and new ACOG

Palmetto-Pride · July 21, 2011, 02:28 PM

I just recently got a 4x32 ACOG for my AR15 and wow what a great sight. I had it zeroed at 100 meters with in 10 shots then I banged a 5" steel target for ten more rounds. I always wonderd about this sight, but wasn't willing to pay $1000.00+ for it. I bought it from my buddy's father inlaw for $500.00 brand new. I couldn't pass it up I figured if I didnt like it I could always sell it on eBay and probaly make a profit.

Artie · July 21, 2011, 02:53 PM

Sweet deal! I wanted an ACOG for my 6.8, but like you, I couldn't pull the trigger on a ~$1,300 optic. For $500 though it would be game on!

loose_holster_dan · July 21, 2011, 03:03 PM

did you get one with the fiber optic fixed sight running along the side and top? is that easy to use? i have my eye on one for my msar, and i'm wondering if i should dish out the extra $80 for that feature.

tobnpr · July 21, 2011, 05:17 PM

Definitely a nice optic.
I decided to go with a 1-4x scope because I felt there might be times when no magnification would be wanted.

Since this is designed as a combat gunsight, wouldn't having fixed magnification of 4x or more be a slight disadvantage for rapid target acquisition at very close ranges?

Not knocking them- they're a fantastic optic- just wondering about the tradeoff of fixed magnification vs. no magnification for acquiring the target at close range.

Palmetto-Pride · July 21, 2011, 08:19 PM

I got the TA01NSN: Trijicon ACOG 4x32 Scope with Amber Center Illumination for M4A1 – includes Flat Top Adapter, Backup Iron Sights and Dust Cover.

I agree at 4x magnification its not meant for door to door house clearing, but more for long range engagements out to 600 meters and thats what I wanted it for I have a red dot sight for CQB.

Quote:

did you get one with the fiber optic fixed sight running along the side and top?

This is the one I got http://www.trijicon.com/na_en/produc...hp?pid=TA01NSN it has backup iron sights on top of it.

Father Time · July 21, 2011, 08:55 PM

Congrats on your new ACOG.
This thread needs some Pics so here is mine:

Its the TA11J-G (The 3.5x with green crosshair reticule)

Palmetto-Pride · July 21, 2011, 09:24 PM

Here is a pic of mine sorry the best I could do right now (iphone and poor lighting)

arizona98tj · July 22, 2011, 12:57 AM

Quote:

Since this is designed as a combat gunsight, wouldn't having fixed magnification of 4x or more be a slight disadvantage for rapid target acquisition at very close ranges?

I don't see it (literally) as a disadvantage with my ACOG. The vast majority of ACOGS are 4x or less (down to 1.5x).

Over the Memorial Day weekend, I took a 4 day practical rifle course using my AR-15. It has a 3.5x ACOG on it. Qualification testing included two hostage taker head shots (that is a 3"x2" area on the bad guy's head) performed at 7 yds with a time limit of 1.5 seconds or less, from the ready position. Very doable...and that includes POA adjustment (compensation) for the holdover needed for a hit at that close distance.

My M&P15.....

Palmetto-Pride · July 22, 2011, 03:37 AM

Isn't that a RMR on the 45degree? And wouldn't you use that for close quarters? Also that can be mounted right on the ACOG I think that's where I am going to put mine when I get it.

Ridge_Runner_5 · July 22, 2011, 09:10 AM

Yeah, he's got a spot for a red dot mount on top of his ACOG.

Good choice on your optic!

tobnpr · July 22, 2011, 11:03 AM

Quote:

Isn't that a RMR on the 45degree? And wouldn't you use that for close quarters? Also that can be mounted right on the ACOG I think that's where I am going to put mine when I get it.

I've always wondered about mounting the mini-holosights on a 45 degree angle like that...
How do you "zero" that optic when it's mounted like that, with the elevation and windage corrections at 45 degree angles?

Palmetto-Pride · July 22, 2011, 12:38 PM

I think the idea would be to turn the rifle at a 45 degree so the mini reddot sight would now be on top and the main sight would be at the 45 degree.

Bartholomew Roberts · July 22, 2011, 01:56 PM

Quote:

Originally Posted by Palmetto-Pride

Isn't that a RMR on the 45degree? And wouldn't you use that for close quarters? Also that can be mounted right on the ACOG I think that's where I am going to put mine when I get it.

Typically the idea behind the angle mounted red dot is that you use the same cheek weld and sight offset for both the red dot and the ACOG. You just roll the rifle outboard a little to switch between them.

If you mount the red dot on top of the ACOG or scope, then it sits higher over the bore. This creates two issues: the first is that you have one sight offset at close range for the ACOG and then a second sight offset for the red dot. The second issue is that you use one cheek weld with the ACOG and a chin weld with the red dot. Since the red dot is parallax free, it isn't a huge deal; but if you get the muscle memory confused and use a chin weld with the ACOG or cheek weld with the red dot, it can be a pain. The angle mount simplifies the problem.

Quote:

Originally Posted by tobnpr

How do you "zero" that optic when it's mounted like that, with the elevation and windage corrections at 45 degree angles?

Yes, it is a little annoying. You get both windage and elevation changes every time you adjust. It is doable though, and since the red dot is primarily for close range shooting, you don't have to be super precise.

July 21, 2011, 02:28 PM	#1
Palmetto-Pride Senior Member Join Date: May 31, 2009 Location: Charleston, SC Posts: 2,071	AR15 and new ACOG I just recently got a 4x32 ACOG for my AR15 and wow what a great sight. I had it zeroed at 100 meters with in 10 shots then I banged a 5" steel target for ten more rounds. I always wonderd about this sight, but wasn't willing to pay $1000.00+ for it. I bought it from my buddy's father inlaw for $500.00 brand new. I couldn't pass it up I figured if I didnt like it I could always sell it on eBay and probaly make a profit.

July 22, 2011, 12:38 PM	#12
Palmetto-Pride Senior Member Join Date: May 31, 2009 Location: Charleston, SC Posts: 2,071	I think the idea would be to turn the rifle at a 45 degree so the mini reddot sight would now be on top and the main sight would be at the 45 degree. Last edited by Palmetto-Pride; July 22, 2011 at 01:12 PM.

July 21, 2011, 02:53 PM	#2
Artie Member Join Date: September 12, 2010 Location: Lexington, KY Posts: 85	Sweet deal! I wanted an ACOG for my 6.8, but like you, I couldn't pull the trigger on a ~$1,300 optic. For $500 though it would be game on!

July 21, 2011, 03:03 PM	#3
loose_holster_dan Senior Member Join Date: April 5, 2011 Location: NE Ohio Posts: 2,461	did you get one with the fiber optic fixed sight running along the side and top? is that easy to use? i have my eye on one for my msar, and i'm wondering if i should dish out the extra $80 for that feature.

July 21, 2011, 05:17 PM	#4
tobnpr Senior Member Join Date: August 1, 2010 Location: Tampa Bay Posts: 4,556	Definitely a nice optic. I decided to go with a 1-4x scope because I felt there might be times when no magnification would be wanted. Since this is designed as a combat gunsight, wouldn't having fixed magnification of 4x or more be a slight disadvantage for rapid target acquisition at very close ranges? Not knocking them- they're a fantastic optic- just wondering about the tradeoff of fixed magnification vs. no magnification for acquiring the target at close range.

July 21, 2011, 09:24 PM	#7
Palmetto-Pride Senior Member Join Date: May 31, 2009 Location: Charleston, SC Posts: 2,071	Here is a pic of mine sorry the best I could do right now (iphone and poor lighting)

July 22, 2011, 03:37 AM	#9
Palmetto-Pride Senior Member Join Date: May 31, 2009 Location: Charleston, SC Posts: 2,071	Isn't that a RMR on the 45degree? And wouldn't you use that for close quarters? Also that can be mounted right on the ACOG I think that's where I am going to put mine when I get it.

July 22, 2011, 09:10 AM	#10
Ridge_Runner_5 Senior Member Join Date: February 8, 2008 Location: Denver, CO Posts: 1,925	Yeah, he's got a spot for a red dot mount on top of his ACOG. Good choice on your optic!