USAAF US Navy Guns since 1930.

• Jun 8, 2016

• Thread starter
• #61

CharlesBronson

Senior Master Sergeant

3,568

89

Jan 11, 2005

Cordoba - Argentina

Firing a prototype of Colt Browning T9/M9 water coooled 37mm gun, this was the same ( without the water jacket and belt fed) gun employed into the single P-63D.


This gun was not the same used in P-39 Airacobra,that employed a much less powerful cartrigde.

 

• Jul 5, 2021

• #62

Zipper730

Chief Master Sergeant

4,430

1,023

Nov 9, 2015

Does anybody have figures for width and height for the 37mm M4 & M9? I have weight figures (213 vs 405 lb.), and a barrel length (89.5 vs 104), but not width and height.

 

• Jul 10, 2021

• #63

G

Greyman

Tech Sergeant

1,868

1,580

Jan 31, 2009

Nothing for the M9 unfortunately.

M4:
Weight: approximately 213 pounds
Dimensions: approximately 89 5/8 inches by 13 7/8 inches by 6 13/18 inches

 

• Jul 10, 2021

• #64

S

Shortround6

Major General

23,065

16,212

Jun 29, 2009

Central Florida Highlands

Not finding anything in "The Machine Gun" by Colonel George Chinn. Lots of other stuff but no height and width.
However since the feed system/s could be changed that might affect things.
Since the M9 was pretty much the same as the 37mm M1A2 AA gun perhaps that could provide your answer?


The gun was adaptable to both left and right feed.

 

• Jul 10, 2021

• #65

Zipper730

Chief Master Sergeant

4,430

1,023

Nov 9, 2015

G Greyman S Shortround6

1. M-4: The 13-7/8th figure is based on height, or width?
2. M-9: It seems that the M1A2 is almost certainly not the same as the M9, that gun weighed a couple thousand pounds

 

• Jul 10, 2021

• #66

S

Shortround6

Major General

23,065

16,212

Jun 29, 2009

Central Florida Highlands

The gun was similar in weight. The carriage & mount went a few thousand pounds.

 

• Jul 11, 2021

• #67

Zipper730

Chief Master Sergeant

4,430

1,023

Nov 9, 2015

I don't have any figures other than what's available on wikipedia.

 

• Jul 11, 2021

• #68

A

A.G. Williams

Airman 1st Class

182

239

Oct 10, 2020

The barrel of the M9 was initially shorter and lighter than that of the M1A2, as it was intended for use in the P-63 Kingcobra. When this installation was dropped, the M1A2 barrel was fitted instead.

 

• Jul 11, 2021

• #69

Zipper730

Chief Master Sergeant

4,430

1,023

Nov 9, 2015

A.G. Williams said:

The barrel of the M9 was initially shorter and lighter than that of the M1A2, as it was intended for use in the P-63 Kingcobra. When this installation was dropped, the M1A2 barrel was fitted instead.

Click to expand...

Okay, so the 104" barrel was from the M1A2?

 

• Jul 12, 2021

• #70

A

A.G. Williams

Airman 1st Class

182

239

Oct 10, 2020

Zipper730 said:

Okay, so the 104" barrel was from the M1A2?

Click to expand...

According to my notes, the M1A2 had an L/54 barrel, the M9 around L/48 (that's 78 inches and 70 inches respectively).

109 inches is the overall length of the M9 gun, not just the barrel.

 

• Jul 15, 2021

• #71

Zipper730

Chief Master Sergeant

4,430

1,023

Nov 9, 2015

A A.G. Williams G Greyman S Shortround6

Here's an image of the 37mm M9



The gun is not perfectly straight in the image and appears to be slightly pointed away from the camera. With the length figures determined, could you give me the height?