New Colt Retro(s) Soon ... ???

[scottryan]

The XM177, XM177E1, Model 653, and a few others came with flat slip rings. Many of the GAU models had a mixture of flat rings and Delta rings.

There isn't such a thing as an XM177

They are either XM177E1 or XM177E2

[The Dumb Gun Collector]

Are these retro uppers coming with M4 ramps? I really want to put together a commando with an A1 upper. I want an iron sight Commando that doesn't have iron sights held on by screws and loc tite.

[Renegade04]

There isn't such a thing as an XM177

They are either XM177E1 or XM177E2

Model 610/XM177
Model 609/XM177E1
Model 629/XM177E2

Along with the Colt Model 609, the Colt Model 610 was the first Colt Carbine to see wide scale
production and use by US Military Forces. The Colt Model 610 entered US Military Service with the US
Air Force and was given the designation of XM177. The primary difference between the Model 609 and
610 was the presence of a Forward Assist on the 609 and the lack of a Forward Assist on the 610. The
Colt Model 610 was also later given the USAF designation of GAU-5A.

[Renegade04]

Are these retro uppers coming with M4 ramps? I really want to put together a commando with an A1 upper. I want an iron sight Commando that doesn't have iron sights held on by screws and loc tite.

If these are true reproductions of the originals, they will not have M4 feedramps. M4 feedramps did not come about until 1994 when the M4 was introduced.

[scottryan]

Model 610/XM177
Model 609/XM177E1
Model 629/XM177E2

Along with the Colt Model 609, the Colt Model 610 was the first Colt Carbine to see wide scale
production and use by US Military Forces. The Colt Model 610 entered US Military Service with the US
Air Force and was given the designation of XM177. The primary difference between the Model 609 and
610 was the presence of a Forward Assist on the 609 and the lack of a Forward Assist on the 610. The
Colt Model 610 was also later given the USAF designation of GAU-5A.

I am not mistaken about this.

A 610 is only a GAU-5/A

There is no such thing as an XM177. Such a lower marked this way does not exist (except for possibility of a prototype), regardless of what you might read in literature.

[Renegade04]

I am not mistaken about this.

A 610 is only a GAU-5/A

There is no such thing as an XM177. Such a lower marked this way does not exist (except for possibility of a prototype), regardless of what you might read in literature.

Back then, how a lower was marked had no real bearing on how it was designated. Many times they were changed around. The Model 610 was originally designated as the XM177. It was later re-designated by the Air Force as the GAU-5/A. The Model 630 was also designated as a GUA-5/A and eventually the GAU-5A/A. It was the Air Force equivalent of the Model 629/XM177E2 except without the forward assist. There was a lot of ambiguity on the carbines used by the Air Force. They had a habit of re-configuring some of the carbines that came over from the Army and, therefore, re-designating them.

[GRA556]

There was a lot of ambiguity on the carbines used by the Air Force. They had a habit of re-configuring some of the carbines that came over from the Army and, therefore, re-designating them.

This does not apply to USAF carbines only. USAF M16 rifles also were often reconfigurations. I've seen them. Some of them also had forward assists and this applied also to rifles as well as carbines.

[Renegade04]

This does not apply to USAF carbines only. USAF M16 rifles also were often reconfigurations. I've seen them. Some of them also had forward assists and this applied also to rifles as well as carbines.

This is true as well. They bastardized a lot of M16 rifles and carbines.

[scottryan]

Back then, how a lower was marked had no real bearing on how it was designated. Many times they were changed around. The Model 610 was originally designated as the XM177. It was later re-designated by the Air Force as the GAU-5/A. The Model 630 was also designated as a GUA-5/A and eventually the GAU-5A/A. It was the Air Force equivalent of the Model 629/XM177E2 except without the forward assist. There was a lot of ambiguity on the carbines used by the Air Force. They had a habit of re-configuring some of the carbines that came over from the Army and, therefore, re-designating them.

What I am talking about are factory built guns.

A 609 is a XM177E1 and is marked PROPERTY OF US GOVT COMMANDO

A 610 is a GAU-5/A and is marked PROPERTY OF US GOVT GAU-5/A

A 629 is a XM177E2 and is marked PROPERTY OF US GOVT XM177E2

A 630 is a GAU-5/A/A and is marked PROPERTY OF US GOVT GAU-5/A/A

This is how they left the factory.

[ClassIIIGunsmith]

There isn't such a thing as an XM177

They are either XM177E1 or XM177E2

this is one time I know I'm right, the Colt 609 is the xm177e1, the colt 610 is the xm177, and the colt 629 is the xm177e2.
and retroblackrifle website is my citation.