Dumb question:-) > Build It Yourself

Posted: 10/27/2007 7:10:46 PM EDT

What is the difference between a A-3 flattop upper receiver and a A-4 flattop upper receiver?

Thanks

Stacey

Posted: 10/27/2007 7:13:52 PM EDT

[#1]

Nothing.

Posted: 10/27/2007 7:15:08 PM EDT

[#2]

Thanks, that is what I thought but it never hurts to ask when in dought.

Stacey

Posted: 10/27/2007 7:20:23 PM EDT

[#3]

Ok one more question, does anyone know if DPMS A-3 upper receivers have feed ramp cuts?

Stacey

Posted: 10/27/2007 7:36:12 PM EDT

[#4]

I was told the A-4 uppers have the feed ramps cut into them and the A-3s do not. Correct me if I'm wrong, I use A-3 for all my builds.

Posted: 10/27/2007 7:41:04 PM EDT

[#5]

Quoted:
Ok one more question, does anyone know if DPMS A-3 upper receivers have feed ramp cuts?

Stacey

Not sure about older ones , but the newer ones do.

(By "newer" , I mean current production , and those made since probably 2004 or so)

Posted: 10/27/2007 8:08:34 PM EDT

[#6]

Quoted:
I was told the A-4 uppers have the feed ramps cut into them and the A-3s do not. Correct me if I'm wrong, I use A-3 for all my builds.

The A3 is the Colt desigation for the FA version of the A2, either with or without a flat top upper. The A4 is the flat top version of the A2 that retains the Safe/Burst FCG. Now, the civ "A3" flat top upper can have M4 ramps or standard ramps.

Posted: 10/27/2007 8:44:46 PM EDT

[#7]

I stand corrected. thanks

Quoted:

Quoted:
I was told the A-4 uppers have the feed ramps cut into them and the A-3s do not. Correct me if I'm wrong, I use A-3 for all my builds.

The A3 is the Colt desigation for the FA version of the A2, either with or without a flat top upper. The A4 is the flat top version of the A2 that retains the Safe/Burst FCG. Now, the civ "A3" flat top upper can have M4 ramps or standard ramps.

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