User Panel
User Panel
User Panel
|
Posted: 2/20/2017 4:34:47 AM EDT
[#1]
C H should be Colt Harvey and is the foundry code.
Your receiver is of the C7 type which originated from a Canadian requirement. They wanted the case deflector but retain the A1 style sights. This receiver was never adopted by the US military but does have a following among US shooters who like this configuration. |
|
|
|
Posted: 2/20/2017 5:13:24 AM EDT
[#2]
I have a factory built 723 using this upper.
|
|
|
|
Posted: 2/20/2017 6:32:08 AM EDT
[#3]
Those are actually A2 uppers with "field sights".
|
|
|
|
Posted: 2/20/2017 11:56:50 AM EDT
[#4]
Quote HistoryQuoted:
Those are actually A2 uppers with "field sights". This is the correct terminology. These were developed as part of the M16A2 series of weapons. They are referred to as A1E1 or C7 (Canadian designation) uppers. They have been used on the later Model 723s and Model 733s. Earlier models of these had M16A1 type uppers. Eventually, these uppers were replaced by the M16A2 upper with a rear sight adjustable for elevation and windage. To my knowledge, there was never a rifle with the A1E1/C7 upper issued to the U.S. military. |
|
|
|
Posted: 2/20/2017 12:10:00 PM EDT
[#5]
Large or normal size pivot pin hole? I'm not saying all, but many of the "C H" C7 receivers I've seen are SP2 receivers.
Example: 
|
|
|
|
Posted: 2/20/2017 2:24:31 PM EDT
[#6]
Quote HistoryQuoted:
Large or normal size pivot pin hole? I'm not saying all, but many of the "C H" C7 receivers I've seen are SP2 receivers. Example: http://moonborn.com/media/upls/2016/06/pix638852416.jpg Yep. Most of the original Colt A1E1/C7 upper did not have forge codes. They had the proof marks in front of the port door area. Here is one I have. You can see the proof marks.  Attached File Attached File |
|
|
|
Posted: 2/20/2017 5:24:39 PM EDT
[#7]
Some of our replacements had these during the first gulf war. I was surprise to see these being issued to 11 Bravo. I myself inspected their weapons.
|
|
|
|
Posted: 2/20/2017 5:32:03 PM EDT
[#8]
Not true! Some were issued to our replacement during the first gulf war. I myself inspected the weapon's while in Iraq.
|
|
|
|
Posted: 2/20/2017 5:39:34 PM EDT
[#9]
I picked up a Police-Trade Bushmaster carbine with this type of upper.
|
|
|
|
Posted: 2/20/2017 6:24:09 PM EDT
[#10]
Quote HistoryQuoted:
Some of our replacements had these during the first gulf war. I was surprise to see these being issued to 11 Bravo. I myself inspected their weapons. Thats what I understand too. They were replacement parts and also COTS purchases. |
|
|
|
Posted: 2/20/2017 6:46:26 PM EDT
[#11]
Quote HistoryQuoted:
Large or normal size pivot pin hole? I'm not saying all, but many of the "C H" C7 receivers I've seen are SP2 receivers. Example: http://moonborn.com/media/upls/2016/06/pix638852416.jpg Pretty sure they're normal sized holes, because the front and rear holes are the same size. |
|
|
|
Posted: 2/20/2017 7:45:55 PM EDT
[#12]
Quote HistoryQuoted:
Pretty sure they're normal sized holes, because the front and rear holes are the same size. You should check. If the pivot pin hole is .315" and the takedown pin hole is .250", then it is a Sporter II upper receiver. If they are both .250", then it is most likely an upper produced for a military model. |
|
|
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.
