User Panel
User Panel
User Panel
|
Posted: 12/2/2018 4:19:11 PM EDT
I have this ACOG and not sure if it belongs on a 14.5-16" or a 20" barrel firearm. In the black area at the bottom of the reticle it has TA31RCO-M4 which leads me to believe it is for the shorter barrel. Can someone help a brother out. This was given to me by a returning soldier about 8 years ago.
|
|
|
|
Posted: 12/2/2018 4:51:15 PM EDT
[#1]
M150 is a blended reticle ment to be close enough for either the carbine or rifle.
|
|
|
|
Posted: 12/2/2018 4:51:58 PM EDT
[#2]
Yep, RCO-M4 was calibrated for M855 through a 14.5 M4 barrel
|
|
|
|
Posted: 12/2/2018 5:19:39 PM EDT
[#3]
Quote HistoryQuoted:
Yep, RCO-M4 was calibrated for M855 through a 14.5 M4 barrel But don't worry too much about cartridge specs and length. It's all relatively approximate. If it really bothers you, just change the zero. Congrats on the scope. It looks pristine for a bringback. FYI Trijicon will still service it for you even though it's mil. Obviously without warranty though. |
|
|
|
Posted: 12/2/2018 6:15:08 PM EDT
[#4]
Quote HistoryQuoted:
M150 is a blended reticle ment to be close enough for either the carbine or rifle. |
|
|
|
Posted: 12/2/2018 6:52:30 PM EDT
[#5]
Don’t overthink it. Put it on whatever .223ish gun you want and rock on, it’s not really going to matter.
|
|
|
|
Posted: 12/2/2018 9:59:13 PM EDT
[#6]
Thanks everyone for the information, it's currently on a 16" mid length but I have a couple of 20" rifles that I was thinking of making an A4 clone and I think this might work for that. I didn't show the other side but it is one with the bible verse ground off and covered with epoxy.
Was the 150 marking have anything to do with what branch used it, say Army or Marines? |
|
|
|
Posted: 12/2/2018 10:02:31 PM EDT
[#7]
The M150 model was built to the Army spec.
|
|
|
|
Posted: 12/2/2018 10:51:12 PM EDT
[#8]
I literally just finished mounting a TA31 on a Colt A4 earlier today. I never liked the TA31 because of the eye relief, but always liked the look of the USMC rifles. I decided to build one and for whatever reason it seems like the eye relief isn't as bad on the rifle. I can't wait to get out and give it a try. I have the TA91 ARD, but it's a lot shorter than the one on your ARD. Do you know what model yours is?
|
|
|
|
Posted: 12/2/2018 11:05:45 PM EDT
[#9]
He has the laser filter.
|
|
|
|
Posted: 12/3/2018 2:38:42 AM EDT
[#10]
Quote HistoryQuoted:
Yep, RCO-M4 was calibrated for M855 through a 14.5 M4 barrel ETA: looks like yours is actually a M150 so go with above answer. Quote HistoryQuoted:
Yep, RCO-M4 was calibrated for M855 through a 14.5 M4 barrel ETA: looks like yours is actually a M150 so go with above answer. Quoted: This. Yours is an M150. |
|
|
|
Posted: 12/3/2018 2:43:15 AM EDT
[#11]
Quote HistoryQuoted:
Thanks everyone for the information, it's currently on a 16" mid length but I have a couple of 20" rifles that I was thinking of making an A4 clone and I think this might work for that. I didn't show the other side but it is one with the bible verse ground off and covered with epoxy. Was the 150 marking have anything to do with what branch used it, say Army or Marines? You say yours has the bible verse ground off? Sounds like it was military property. Hope it got sold legitimately... |
|
|
|
Posted: 12/3/2018 6:56:43 PM EDT
[#12]
Quote HistoryQuoted:
Yes, the TA31RCO-M150CP is the Army model; the scope is the same, the only real difference is the accessories it comes with. The -M150 has objective and ocular lens covers. The TA31RCO-A4CP is the USMC standard issue (or was anyway) for the M16A4, and the TA31RCO-M4CP is the USMC standard issue for the M4. The USMC models do not have lens covers. You say yours has the bible verse ground off? Sounds like it was military property. Hope it got sold legitimately... Quote HistoryQuoted:
Quoted:
Thanks everyone for the information, it's currently on a 16" mid length but I have a couple of 20" rifles that I was thinking of making an A4 clone and I think this might work for that. I didn't show the other side but it is one with the bible verse ground off and covered with epoxy. Was the 150 marking have anything to do with what branch used it, say Army or Marines? You say yours has the bible verse ground off? Sounds like it was military property. Hope it got sold legitimately... |
|
|
|
Posted: 12/3/2018 10:56:15 PM EDT
[#13]
Quote HistoryQuoted:
Didn’t they start grinding it off on all of them? I assumed they switched it on all 31’s just for the sake of simplicity. 
|
|
|
|
Posted: 12/5/2018 1:10:49 AM EDT
[#14]
Quote HistoryQuoted: Didn’t they start grinding it off on all of them? I assumed they switched it on all 31’s just for the sake of simplicity. |
|
|
|
Posted: 12/5/2018 1:35:29 AM EDT
[#15]
Quote HistoryQuoted:
No. The grounding off of the bible verse was their "fix" that they gave to the military. There would be no need for a commercially sold ACOG to be sent back to Trijicon. They changed the manufacture of their ACOGs since that (bullshit) controversy surfaced. The forging on the right side now only reads "ACOG4x32"; so they've made a new mold without the bible verse. The bible verse has now been moved to the left side as part of the laser engraved markings there; it's in the last line of text on that side. This allows them to still include the bible verse on their commercially sold ACOGs while omitting it from the ones they sell to the military, but not require two separate molds for the housing. Below are some pics of my commercial TA31RCO-M4CP showing how they moved the bible verse: https://drive.google.com/uc?export=download&id=1ynHzcKfxKjVfaluT8HKDSIKlD0RB-7mD https://drive.google.com/uc?export=download&id=1L3EpLTlY_z7X7zMD-dt7Iww0-41MT_uY Quote HistoryQuoted:
Quoted: Didn’t they start grinding it off on all of them? I assumed they switched it on all 31’s just for the sake of simplicity. https://drive.google.com/uc?export=download&id=1ynHzcKfxKjVfaluT8HKDSIKlD0RB-7mD https://drive.google.com/uc?export=download&id=1L3EpLTlY_z7X7zMD-dt7Iww0-41MT_uY |
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
