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AR15.COM
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3/2/2008 1:25:57 PM EDT
what rate of twist did the model 723s have? thanks.
dustin
3/2/2008 1:39:27 PM EDT
[#1]
1:7
3/15/2008 2:42:49 PM EDT
[#2]
Would a 723 have an A1 or an A2 lower receiver?

TIA!
Phillip
3/15/2008 2:55:03 PM EDT
[#3]

In the early 1980s, at the request of the United States Marine Corps, Colt upgraded the M16A1 rifle, resulting in the M16A2 rifle. Among the major changes were a reinforced lower receiver, a case deflector, a birdcage flash suppressor redesigned to be a muzzle brake, and a barrel with a faster 1-in-7 twist. The faster barrel was necessitated by the switch from the 55 grain M193 bullet to the 62 grain M855 bullet. The M16A2 rifle's barrel was also thicker for the portion in front of the handguard. Colt incorporated these changes into its carbines, which it called M16A2 carbines. The Model 723 M16A2 carbine used the iron sights of the M16A1, but had a case deflector. The barrel had a 1-in-7 twist, but the thinner profile of the older M16A1 carbine's barrel. As with the Model 653, the United States military made small purchases of the Model 723 for its special operation forces.


Wikipedia
3/15/2008 2:57:42 PM EDT
[#4]

Quoted:
Would a 723 have an A1 or an A2 lower receiver?

TIA!
Phillip


The 723 would have an A1 upper while the 725 would have an A2 upper.
3/15/2008 3:27:58 PM EDT
[#5]

Quoted:
Would a 723 have an A1 or an A2 lower receiver?

TIA!
Phillip


A2 lower I think, but I'm not 100% sure.
3/15/2008 3:28:44 PM EDT
[#6]

Quoted:
Would a 723 have an A1 or an A2 lower receiver?

TIA!
Phillip


The were marked like an A2 (both sides) but were machined from both A1 and A2 forgings.
3/15/2008 5:37:42 PM EDT
[#7]
does anyone have a detailed picture of a 723 lower? or all of the transitional lowers for that matter? thanks.
dustin
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