Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > AR-10/AR-15 difference?

Reply
 
LinkBack Thread Tools Display Modes
Old 07-13-2011, 11:33 AM   #1
Feedback Score: 0 reviews
 
Join Date: Jul 2011
Location: Munich,Bavaria
Posts: 4
Default AR-10/AR-15 difference?

Hello,

Besides of the different caliber, what are the other technical differences of the AR-10 compared to the AR-15?

I ask this question in this sense:

I would like to mount the Magpul .308 PRS in my HK MR308 (it is called MR762 in the US, I guess).

In a german forum one guy said, that the PRS uses the same buffer tube like the AR-15. But is that possible? Due to the "bigger" caliber of the AR-10, the receiver has to be more massive, therefore the buffer tube must be wider in its diameter and the buffer spring of the AR-15 should be too weak to make the AR-10 receiver slide forward again.

Has anyone already tried to mount an PRS on the MR308 (IF possible)?

Regards

ExarKun

__________________
ExarKun is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 07-13-2011, 12:45 PM   #2
Feedback Score: 0 reviews
 
mjkeat's Avatar
 
Join Date: Jul 2010
Location: Wichita,Kansas
Posts: 4,026
Liked 8 Times on 8 Posts

Default

I am not up on AR10 style rifles but I do know you can use .308 receiver extensions on AR15s. That leads me to make the assumption that you could mount a PRS on an AR10 style AR.

Someone will be along shortly w/ a more concrete answer.

__________________
mjkeat is offline  
 
Reply With Quote
Old 07-13-2011, 12:52 PM   #3
Feedback Score: 0 reviews
 
Join Date: Jul 2011
Location: Munich,Bavaria
Posts: 4
Default

Hello,

Yes, you can usw .308 receiver extensions on the AR-15, because the AR-15 and the AR-10 use both a mil-spec buffer tube.

Thats what I read in an other forum.

And there lies the problem. The buffer tube of my MR223 is 30mm in diameter, so I can Install i.e. the UBR Stock on the MR223.

The MR308 has a 35mm buffer tube and the question is: does the PRS .308 also have a buffer tube in this diameter?

I fear not.

Any different opinion?

__________________
ExarKun is offline  
 
Reply With Quote
Old 07-13-2011, 01:02 PM   #4
Feedback Score: 0 reviews
 
neilage66's Avatar
 
Join Date: Jul 2011
Location: FEMA,Region V
Posts: 630
Liked 3 Times on 3 Posts

Default

AR15 = scaled down AR10

The only difference in the PRS stock body is the length of the cheek riser.
The riser on the AR10 version is shorter to accommodate the longer charging handle stroke.

There are many variations of buffer and spring to choose from depending on your upper.

__________________
Yesterday is history, tomorrow is a mystery and today...today is a gift.

Be Well.
neilage66 is offline  
 
Reply With Quote
Old 07-13-2011, 01:05 PM   #5
Feedback Score: 0 reviews
 
dnthmn2004's Avatar
 
Join Date: Apr 2008
Location: Do you see what happens,Larry?!
Posts: 3,317
Liked 5 Times on 3 Posts

Default

First, stop by the introductions area and tell us a little about yourself

Second, I did a little research for ya and found some detailed info..

Here are the two different PRS's, one for AR-15 and one for AR-10.

MAGPUL PRS PRECISION RIFLE STOCK FOR AR15 GEN 2, BLACK

MAGPUL PRS PRECISION RIFLE STOCK FOR AR10/SR25 GEN 2, BLACK

Not sure if it answers your question, but more or less gives you another problem.

__________________
AMAT VICTORIA CURAM

ΜΟΛΩΝ ΛΑΒΕ!
dnthmn2004 is offline  
 
Reply With Quote
Old 07-13-2011, 01:27 PM   #6
Feedback Score: 0 reviews
 
Join Date: Jul 2011
Location: Munich,Bavaria
Posts: 4
Default

@ neilage66 @dnthmn2004:

Thank you, but I knew all that before. The most important question for me is: does the AR-10 also have a mil-spec buffer tube, or has the AR-10 buffer tube a bigger diameter?

__________________
ExarKun is offline  
 
Reply With Quote
Old 07-13-2011, 01:35 PM   #7
Feedback Score: 0 reviews
 
neilage66's Avatar
 
Join Date: Jul 2011
Location: FEMA,Region V
Posts: 630
Liked 3 Times on 3 Posts

Default

From ArmaLite faq:

Quote:
RECEIVER EXTENSION TUBES

•.223 / .308 rifle length 9-11/16” (inside depth)
•.223 carbine length 6-15/16” (inside depth)
•.308 carbine length 7-5/8” (inside depth)

Commercial size tube O.D. - 1.165” – 1.167” (we don’t use this anymore)
Military (G.I.) size tube O.D. – 1.145” – 1.147” (carbine and rifle)
__________________
Yesterday is history, tomorrow is a mystery and today...today is a gift.

Be Well.
neilage66 is offline  
 
Reply With Quote
Old 07-13-2011, 01:39 PM   #8
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 17,134
Liked 5276 Times on 2751 Posts
Likes Given: 333

Default

There is no milspec standard for ar10 as it has never been adopted by any military. Each parts manufacturer pretty much designs their own. So any cross use between different platforms is purely hit or miss. With non-milspec there is often fitting required to make some things work. Even with milspec swapping parts is sometimes an issue altho the ar15/m16 suffers from this less than most.

My opinion:
With ar10 you should treat them as a sole standalone rifle regardless of its cosmetic similarity to the ar15

__________________

"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

JonM is offline  
 
Reply With Quote
Old 07-13-2011, 01:55 PM   #9
Feedback Score: 0 reviews
 
neilage66's Avatar
 
Join Date: Jul 2011
Location: FEMA,Region V
Posts: 630
Liked 3 Times on 3 Posts

Default

Quote:
Originally Posted by JonM View Post
There is no milspec standard for ar10 as it has never been adopted by any military.
Your statement does not paint the full picture in regards to the AR10.

The AR10 has been purchased and used (albeit in limited quantities) by the armies of Guatemala, Burma, Italy, Cuba, Sudan, Portugal, Canada and the United States.

Does this mean it was *not adopted*...yes and no.
__________________
Yesterday is history, tomorrow is a mystery and today...today is a gift.

Be Well.
neilage66 is offline  
 
Reply With Quote
Old 07-13-2011, 02:13 PM   #10
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 17,134
Liked 5276 Times on 2751 Posts
Likes Given: 333

Default

The remington 700 falls under that as well but there is no milspec standard. When i said adopted i meant as a country's main battle rifle.

__________________

"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

JonM is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
.223 or 5.56 what's the difference? WDbeej Ammunition & Reloading 8 07-12-2011 01:38 AM
Difference between M39 EMR and Mk 14 Mod 0 EBR??? Joel Auto & Semi-Auto Discussion 1 10-19-2010 06:00 PM
What is the difference? Redneckjoe09 Concealed Carrying & Personal Protection 4 04-27-2009 03:32 PM
Difference? serenity AR-15 Discussion 5 08-06-2007 02:10 PM



Newest Threads