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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/14/2010 at 20:29
pyro6999 View Drop Down
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so im seriously considering an ar build for this coming winter. my issue is that i need parts to build it obviously, but my question is this, i see some places sell lowers that they say are armalite compatible, then others say they sell lowers that are dpms compatible, whats the difference and which is better??

also if anybody knows of decent places to order lowers and uppers that would help me out too. i need a stripper ar-10 upper and either a complete lower or a stripped lower.

im looking to build a .338fed ar-10Cool


Edited by pyro6999 - June/14/2010 at 21:22
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/14/2010 at 20:44
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There are a few versions of 30-cal receivers, DPMS, Armalite, and Rock River - and maybe a few others.  None are compatible with others.

As to which is better, there is no hard metric to define the term "better."  I like Armalites, I have had great success with Armalites over the years, I bought an Armalite.  I know guys with DPMS and they like them.  I hear good things about the Rock Rivers (though there seem to be far fewer of those - newer - and only Rock River makes parts for them.)

My experience is that Armalites cost a little more, whether you get anything for that is debatable.  I like Armalite, I trust Armalite, I bought Armalite.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/14/2010 at 20:57
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from what ive read a lot of lowers are parts compatible with others, seems to me like most of them i see are dpms compatible
like this one for instance.

http://www.sonju.net/lowers.html
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/14/2010 at 21:09
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where is a good place to get these parts???
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/14/2010 at 21:30
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I was looking into a 308 at one time Called DPMS he mentioned something about if i had dpms upper i could only use it on a dpms lower reciever. dont quote me on this but I think he said they can use the FAL 308 mags. but good luck Thunbs Up
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/15/2010 at 07:31
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Check out Fulton Armory, they have everything you would need to complete a 308.  Their uppers and lowers are DPMS compatable (pretty sure).  Either way, Armalite or DPMS, you will be good. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/15/2010 at 11:46
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Unlike the AR15 platform, which has established mil specs so that most anyone's upper will work with anyone's lower, and you can pretty much mix parts, the AR10 platform never was truly standardized.  Armalite started the AR10 platform, so they are considered the "standard."  Many parts like trigger groups, buffer parts, bolt heads, etc. are interchangeable, but not all AR10 lowers and uppers are compatible.  DPMS has a slightly different mating contour between upper and lower than Armalite.  However, if you have a particular lower already, just let whomever you plan to buy the upper from know what you have and they should be able to tell you whether their upper is compatible.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/15/2010 at 13:22
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http://www.ironridgeguns.com/ira-x-receivers/

My lower came from them (Armalite-compatible.)  Upper came from Armalite.

I hear the DPMS are as accurate as you care to make them.  Both Armalite and DPMS have MANY options.  I chose to build mine myself because it was (maybe still is) less expensive than buying something "close" and swapping parts to get to what you want.

Here's ol' girl with a can, Hensoldt, and the new-fangled Aadmount.









Edited by Rancid Coolaid - June/15/2010 at 13:23
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/15/2010 at 13:39
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thanks for the info guys it all helps me a bunchThunbs Up
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/15/2010 at 14:33
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Originally posted by pyro6999 pyro6999 wrote:

where is a good place to get these parts???
 
These are good people.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/15/2010 at 14:41
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thanks mark i just signed up with them a second ago thanks for the link.
is the stuff they sell mostly armalite compatible?? i dont see anything on their products that says one way or another.


Edited by pyro6999 - June/15/2010 at 14:52
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/15/2010 at 14:52
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Originally posted by pyro6999 pyro6999 wrote:

thanks mark i just signed up with them a second ago thanks for the link.
 
Think I worked with a dude named John. Really good service. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 07:37
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Rancid-- looks like JonA got his one piece scope mount going. Nice solid unit, priced right, streamlined, few questions however-- Whats the spacing distance between the rings?  Is the clamping plate made of Al or steel?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 14:27
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Hi Dale, the spacing between rings is 2.54".  The 34mm model was kept short specifically to fit S&B 3-12 and 4-16 PMII scopes which have short ring spacing due to their illumination control taking up some of the space on the tube.   However the spacing is wide enough it should fit any 34mm scope out there I know of except for USO T-Pals.  The 30 and 35mm mounts will have a larger spacing (2.9") so they should fit T-Pals (and obviously fitting S&B isn't a concern in those sizes).

It's all aluminum, including the clamp.  Great care was taken to correctly size the parts for the given material allowables.  The Grade 8 screws, the clamp and the threads in the body will all fail at roughly the same load--which is so high both the rifle and scope would likely be destroyed in the process.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 14:49
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First scope mount for an AR-type rifle I've ever seen that I liked.  I had chosen the FNH FNAR, but now the AR-10 is back on the "list". 
Very nice, Jon.  Good looking and functional looking.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 15:13
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Thanks.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 15:31
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You're welcome.  I am anxious to try it out...
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 15:40
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Jon's mount functions very well, solid, lots of lockup area.  I like it.

Be advised, it ain't for the 6.5-pound carbine crowd, it is rather large and bulky, but no worries the scope will move under impact.

I haven't removed and remounted (to check for POI shifts) yet, but so long as it goes back in the same slots, it looks like POI shift should be minimal.

And the screws are the larger tip, not those tiny ones that strip out so easily.  That is a huge plus!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 15:46
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That is a very nice, solid looking mount there, Jon.  I like it!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 16:06
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Do you sell these mounts Jon?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 16:57
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Yes.  http://www.aadmount.com/ .  And it's possible a distributor you know very well will pick them up in the not too distant future.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 17:50
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Pyro is this going to be like that Cadillac that Johnny Cash sang about.   .....   One piece at at time....... 
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 18:08
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I went with DPMS and Mag Pul is now making mags for the DPMS guns which is a sign that they are quite popular.  The Rock River uses metric FN FAL mags. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 18:10
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Wes,

You'd be surprised how much a newer pistol grip will help.  I shot these grips for years and, once i tried magpul, haven't looked back.  it's kinda like that first pair of good hiking boots you get after 5 years in your favorite jungle boots: whole other level of awesomeness.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2010 at 18:44
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Originally posted by Urimaginaryfrnd Urimaginaryfrnd wrote:

Pyro is this going to be like that Cadillac that Johnny Cash sang about.   .....   One piece at at time....... 
 

thats the guy who is building it
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