[ARCHIVED THREAD] - AR10/DPMS 308 Dimensions

Posted: 6/23/2008 7:58:34 PM EDT

Two questions:

1. Can anyone give me precise dimensions (A, B, C, D) for the AR10 or DPMS .308 barrel extension? Refer to attached image.

2. Where can a person get a dimensioned drawing of an AR10 or other .308 Upper reciever, so that he doesnt have to ask such silly questions on the forum? I have found cad files for the AR10 lower on the net, but not for the upper. Anybody?

http://img371.imageshack.us/img371/5902/extension2fk6.jpg

Thanks!

Posted: 6/24/2008 1:34:39 AM EDT

[#1]

A 1.187
B 1.375
C .125
D 1.365

Note - the OAL is 1.930

Posted: 6/24/2008 6:42:03 AM EDT

[#2]

Thanks a lot! Very helpful place, this.

I'm confused by the last staement, though. How is OAL different than dimension B?

Posted: 6/24/2008 10:14:02 AM EDT

[#3]

also remember, DPMS and Armalite do have different Dimension A.

Posted: 6/24/2008 11:09:44 AM EDT

[#4]

Quoted:
also remember, DPMS and Armalite do have different Dimension A.

How much different? I installed a barrel with a Armalite extension in a DPMS upper and it works great. I thought it was the C that was different-- all that affects is how much the barrel nut threads on.

Posted: 6/24/2008 7:12:40 PM EDT

[#5]

Quoted:
also remember, DPMS and Armalite do have different Dimension A.

There is maybe .001-.002" difference as best as I can measure. I would not call that different as both are probably in spec. YMMV

Posted: 6/24/2008 9:06:21 PM EDT

[#6]

And the comment about OAL?

Posted: 6/24/2008 10:51:27 PM EDT

[#7]

our uppers are machined in house and held to tight tolerances.....it may not make a difference in receivers manufactured but others, but I can see it with our stuff.

[ARCHIVED THREAD] - AR10/DPMS 308 Dimensions

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[ARCHIVED THREAD] - AR10/DPMS 308 Dimensions

[ARCHIVED THREAD] - AR10/DPMS 308 Dimensions