AR15.Com Archives
 .308 armalite dpms questions
BILLBO  [Team Member]
12/3/2008 1:30:27 PM
i thinking about getting a dpms .308 Clone.

are dpms and armalite parts interchangeable or what parts are or are not ?

whats the lightest barrel available ?

are any of the parts interchangable with the ar15 such as pins buffers triggers?

also

would a .300 saum upper fit the .308 lower?



thanks







Paid Advertisement
--
DaveS  [Team Member]
12/3/2008 1:34:31 PM
Originally Posted By BILLBO:
i thinking about getting a dpms ar10

are dpms and armalite parts interchangeable or what parts are or are not ?

whats the lightest barrel available ?

are any of the parts interchangable with the ar15 such as pins buffers triggers?

thanks

You've got 30 minutes to get a crowd and sell tickets so that you can upgrade to an ARMALITE... cause LARRYG is going to stretch your hinnie.









BILLBO  [Team Member]
12/3/2008 1:39:52 PM
Originally Posted By DaveS:
Originally Posted By BILLBO:
i thinking about getting a dpms ar10

are dpms and armalite parts interchangeable or what parts are or are not ?

whats the lightest barrel available ?

are any of the parts interchangable with the ar15 such as pins buffers triggers?

thanks

You've got 30 minutes to get a crowd and sell tickets so that you can upgrade to an ARMALITE... cause LARRYG is going to stretch your hinnie.











i dont get it?

DaveS  [Team Member]
12/3/2008 1:51:18 PM
da-da-damn company server and firewall.







TxLewis  [Life Member]
12/3/2008 1:52:01 PM
no, not interchangable

go with the best

armalite ftw

TXL
nmmi9100  [Team Member]
12/3/2008 1:58:48 PM
Originally Posted By BILLBO:
i thinking about getting a dpms .308 Clone.

are dpms and armalite parts interchangeable or what parts are or are not ?

whats the lightest barrel available ?

are any of the parts interchangable with the ar15 such as pins buffers triggers?

also

would a .300 saum upper fit the .308 lower?



thanks


The DPMS and Armalite 308 systems are not compatible with each other. Both use a number of AR-15 parts including detents, springs, pins, pistol grip, triggers, etc but the Lower and upper receivers are not compatible with each other. An Armalite Upper will fit on a DPMS lower but it leaves a wicked gap between the two near the receiver extension.

In my opinion, the Armalites are higher quality with forged upper receivers. DPMS uses extruded receivers, made much like you would make sausauge or pipe, with metal shot through a die to create the upper. I've installed a few DPMS lower parts kits in ARs and they have the crappiest fit & finish of any LPK i've ever seen. We had to cannibalize another kit because of all the out of spec parts in the DPMS. Still ended up uszing a dremel to clear off all the metal from the mould joints.

That said, other manufacturers are going more with compatibility with the DPMS system. The Armalite uses Armalite mags as well as converted M14 mags. The DPMS is compatible with DPMS mags, SR-25 mags, and C-Products Mags. Fulton Armory also makes a DPMS compatible lower and I've heard that a company is making a DPMS upper compatible lower that uses $2 HK91 mags.

If you plan to stay with a stock gun, I think the Armalite is higher in initial quality as it is. If you plan to customize the gun, such as acquiring a lower that works with cheap HK91 mags or a lower from some other company such as POF, the DPMS system has more companies making parts to that spec. DPMS also offers a wider selection of calibers than Armalite.

As to the inhereint strength of an extruded versus forged upper, I doubt most of us will ever find out which is strong because we take care of our rifles and don't subject them to combat in harsh conditions.

-David
Edgewood, NM
sigsauer_pdx  [Member]
12/3/2008 2:00:04 PM
AR15 parts are interchangeable on the LPK, Front pin is longer though. I don't think DPMS and Armalite are interchangeable but I'm not 100% on that. I have a RRA 2 stage trigger in my LR-308 and it's just fine. I have a 300saum upper but haven't shot it yet. Should be a good time. I think the Sportical is probably the lightest of the DPMS 308'sThe DPMS 308's are very hard to come by right now. If you can find one for a good price jump on it. On a seperate note, how's that Stag lower I sold you a couple years back? I'm kind of wishing I hadn't sold it to you now. If you want to sell it back I'll give you $20 more than what I sold it to you for.
BILLBO  [Team Member]
12/3/2008 2:24:33 PM
still got it, its a keeper

what the heck are you doing in WY


300saum upper -ya wanna sell it?

so it does fit the .308 lower?
Wirebrush  [Team Member]
12/3/2008 2:25:09 PM
There are more parts that are interchangable than those that are not. One of these days I'm going to have to get an Armalite just to prove this. I personally think the DPMS is a better deal and the money you save can be spent on a greater variety of aftermarket upgrades and magazines.
sigsauer_pdx  [Member]
12/3/2008 5:37:31 PM
Billbo,
I figured it was worth a shot on the Stag lower. Just out in WY living the good life. Got tired of the commute and rat race of Portland. Now I have wide open spaces, 16 mile commute that takes 15 minutes and low taxes. Closer to the wife's family too. If you ever get out this way give me a shout. I'll let you know if I ever want to sell the SAUM upper, though my brother in law already called first dibs. Personally I went with the DPMS due to cost, and the price of magazines. C Products still has them for $22. I think I'm going to pick up a few more in the next month. Keep me updated on what you decide to go with, good luck out there on the left coast.
swatbwana  [Member]
12/3/2008 9:02:18 PM
CMMG will be shipping AR10 (armalite) compatable lowere with G3 magwells next month
JD42  [Team Member]
12/4/2008 12:53:41 AM
Both the DPMS and Armalite are great rifles. I personally am very surprised at the quality of the DPMS that I got. I am in the process of customizing it. Many of the parts like triggers are interchangeable. Stocks also. I have mine set up with a Vltor Emod. And have a Fulton Armory S/S 16in barrel. Next is a good FF tube. I am looking at both the Daniels Defence 12in lite (very expensive) and the PRI light and not to bad expense wise. Personally from the stand point of mags and parts. I would recommend the DPMS. Several Co. make interchangeable uppers. POF, CMMG, Fulton Armory etc. Also the New LaRue will use the same Mag's. The "C" products work fine. But the one's I have only hold 19rd. For the money good rifle. Still a few to be had at a reasonable price.
BILLBO  [Team Member]
12/4/2008 10:18:35 AM
so will a ar 15 stock and buffer fit a dpms .308 then that would be soooo cool?
BiggiBen  [Member]
12/4/2008 12:12:35 PM
Originally Posted By swatbwana:
CMMG will be shipping AR10 (armalite) compatable lowere with G3 magwells next month




Really?


Their website only has the DPMS upper comaptible G3 mag lowers.

http://cmmginc.secure-mall.com/shop/?cart=1384519&cat=38&

AR-Doctor  [Member]
12/4/2008 8:47:50 PM

so will a ar 15 stock and buffer fit a dpms .308 then that would be soooo cool?




It did on my DPMS 308. All the stocks front and back where the same. The Buffer, Buffer Spring, are not the same as the AR-15 (223). Also the triggers are the same except you use the 308 hammer. And you use a DPMS or C-Product mag. No M1A mags, or AR-10 mags.

But i will foreworn you. GOOD LUCK finding one at this time. And if you do. Bring $2000.00 that way you might have enough for a Mc Crack HamBuger on the way home.

JD42  [Team Member]
12/5/2008 1:18:48 AM
I have mine set up (DPMS) with a Vltor Emod. On a mil-speck receiver extension. You will have to use a Ar10 carbine buffer and spring. The DPMS uses the DPMS mag's, C product mag,s, POF mags the Old Waffle Armalite mags, and SR25 mag,s from Knight. The Armalite (new) uses Mod. M14 mags. CMMG is coming out with one that will use HK G3 mags. And RRA arms uses Fal mags. But is a copy of the the old Bushmaster and that had problems with feeding. Also a 6-12 month back order. Check out Fulton Armory also DPMS type set up.
BILLBO  [Team Member]
12/5/2008 3:28:21 AM
so if it uses the same size buffer tube i take it that if the buffers are different the .308 buffer must be heavier then?

i have a endine ar15 buffer would it would it work or would i need to get ar10 endine buffer and if so would a ar10 buffer only fit a armalite buffer tube or are those the same?

thanks

Bill
BillBond  [Member]
12/6/2008 9:36:58 AM
Originally Posted By BILLBO:
Originally Posted By DaveS:
Originally Posted By BILLBO:
i thinking about getting a dpms ar10

are dpms and armalite parts interchangeable or what parts are or are not ?

whats the lightest barrel available ?

are any of the parts interchangable with the ar15 such as pins buffers triggers?

thanks

You've got 30 minutes to get a crowd and sell tickets so that you can upgrade to an ARMALITE... cause LARRYG is going to stretch your hinnie.











i dont get it?




Because he goes absolutely postal if anyone dare say anything other than
the AR10 is the bestest gun ever in the whole universe.


JD42  [Team Member]
12/6/2008 11:16:28 AM
For the money if you are going with a carbine type upper. Go with the Slash buffer and spring. The DPMS uses the same size receiver extension/buffer tube as the Ar15. But the buffers are a little heaver.
swatbwana  [Member]
12/7/2008 10:01:56 AM
Originally Posted By BiggiBen:
Originally Posted By swatbwana:
CMMG will be shipping AR10 (armalite) compatable lowere with G3 magwells next month

GOT the email last week


Really?


Their website only has the DPMS upper comaptible G3 mag lowers.

http://cmmginc.secure-mall.com/shop/?cart=1384519&cat=38&



Bitmap  [Team Member]
12/7/2008 9:21:07 PM
DPMS uses extruded receivers,


Isn't that true only for the slick side uppers, not for the A3 uppers with the port cover, deflector, and FA?

shrikefan  [Team Member]
12/7/2008 9:28:42 PM
Originally Posted By Bitmap:
DPMS uses extruded receivers,


Isn't that true only for the slick side uppers, not for the A3 uppers with the port cover, deflector, and FA?



The uppers are ALL extruded.

olds442tyguy  [Member]
12/7/2008 10:01:07 PM
The lowers are not extruded, but billet.

Also, extrusions are not weaker than forgings on a level anyone will ever know in this scenario. In fact, extruding technically is a forging process. They both start with a solid chunk of billet bar stock which is then made stronger through the (different) forging processes anyways.......


I'll probably go with a DPMS. I prefer standardized magazines, and they seem to have a slight edge when it comes to reliability and accuracy. That said, I almost put an AR10 on layaway a couple weeks ago and don't think I would have regretted it.
shrikefan  [Team Member]
12/7/2008 10:37:11 PM
Originally Posted By olds442tyguy:
The lowers are not extruded, but billet.




Sorry, I fixed it.
oz1  [Member]
12/8/2008 5:56:43 AM
I dropped a mccormic trigger in my lr308 and it is fine. I also put an armalite 16" bbl in it and it is fine. use the dpms or armalite bcg. use the armalite gas tube. doug
BILLBO  [Team Member]
12/8/2008 3:07:03 PM
Originally Posted By JD42:
For the money if you are going with a carbine type upper. Go with the Slash buffer and spring. The DPMS uses the same size receiver extension/buffer tube as the Ar15. But the buffers are a little heaver.



i have been looking for info on the slash buffer and cant find any where do you get them and what makes them
better

I have been concidering a endine
DnPRK  [Team Member]
12/8/2008 3:56:06 PM
Originally Posted By BILLBO:
Originally Posted By JD42:
For the money if you are going with a carbine type upper. Go with the Slash buffer and spring. The DPMS uses the same size receiver extension/buffer tube as the Ar15. But the buffers are a little heaver.



i have been looking for info on the slash buffer and cant find any where do you get them and what makes them
better

are they like the endine i uses a endine for my grendel and it really reduced the recoil alot


I bought one of his buffers. Excellent quality and fast shipping.
Slash AR-10 Buffers
BILLBO  [Team Member]
12/19/2008 1:54:03 AM
i was wondering what size buffer to use on my dpms .308 if i used a .223 M4 carbine stock i read this

there is a 3¼" recoil buffers.

and a 2½" buffer

so i take it i would probably need the shorter one?

the slash looks like a really good buffer but has anyone tried a endine on a .308?

Thanks

Bill
Gardner  [Member]
12/19/2008 12:09:21 PM
You nedd the short one. I'm pretty sure the Endine will not work on a Carbine DPMS .308. Its too long. Maybe with a Armalite buffer tube(Longer). Get a AR10 spring first. The DPMS springs are weak. The Armalite spring has a better coil design. Slash's CAR10 buffer is sweet. My 20" LR308 w/CTR became much nicer with the AR10 spring/CAR10 combo. Cycling was much smoother and brass goes a bout 3 feet instead of 10. With the factory setup I could feel the buffer slamming up to the end of the stock tube. Not very nice. Now its butter. Nice. thanks, Slash.
A few guys around here have the Endine and another one like the Endine but it has a spring or bumper in it. They seem to work well but its more of a setup thing. If all shot the same loads, rifles all had carbine stocks, weight was the same, all on bipods ect. then a comparison could be made that meant something. We have not done that. Anything will be better than the stock setup as far as felt recoil.
BILLBO  [Team Member]
12/26/2008 11:13:44 AM
will a armalite carbon fiber tube fit dpms?
Erevis  [Member]
12/26/2008 11:58:23 AM
Originally Posted By BILLBO:
will a armalite carbon fiber tube fit dpms?



Nope. Threads are different. You would need a DPMS barrel nut.


–– John

GenoDinah  [Member]
12/27/2008 8:35:38 PM
Originally Posted By sigsauer_pdx:
Billbo,
I figured it was worth a shot on the Stag lower. Just out in WY living the good life. Got tired of the commute and rat race of Portland. Now I have wide open spaces, 16 mile commute that takes 15 minutes and low taxes. Closer to the wife's family too. If you ever get out this way give me a shout. I'll let you know if I ever want to sell the SAUM upper, though my brother in law already called first dibs. Personally I went with the DPMS due to cost, and the price of magazines. C Products still has them for $22. I think I'm going to pick up a few more in the next month. Keep me updated on what you decide to go with, good luck out there on the left coast.



Hello, can you guys tell me what the heck the difference is on the magazines. Won't all .308 magazines fit into any .308 lower receiver? Please explain, thanks.
less_than_zero  [Member]
12/28/2008 1:25:56 AM
Is there a recommended parts list that may include interchangeable parts? I am soon to start building on a dpms lr-308 and wanted to know the interchangeable parts; especially the parts from rra or another mfg that might be better than the stock dpms parts. Does such a list exist? I figure that I will have better luck by scrounging for individual parts than looking for a complete upper, etc.
yellowhammer1  [Member]
12/28/2008 1:11:21 PM
deleted
jason_h  [Member]
12/28/2008 3:34:41 PM
Originally Posted By sigsauer_pdx:

Hello, can you guys tell me what the heck the difference is on the magazines. Won't all .308 magazines fit into any .308 lower receiver? Please explain, thanks.


Short answer: No.

There are four common .308 battle rifle magazines: FAL (RRA uses these), M14 (Armalite uses these), original AR10/SR-25 (DPMS and KAC use these), and G3/HK91 mags.

KAC was the first to bring out a modern AR-10 variant to the market and stuck with the orginal AR-10 mag configuration. During the AWB, Armalite came out with a AR-10 variant that used M14 mags. These mags were chosen because they were relatively plentiful, unlike the original AR-10 mag or KAC mags, and worked fairly well with the AR format, unlike FAL mags which were also plentiful at the time. BM then came out with a model that used FAL mags, but they didn't have much success for a number of reasons. RRA rifles are basically the same as the BM rifles. DPMS came out with their AR-10 variant near the end of the ban, and decided to go with the original mag design, which made sense, since the ban had ended and high cap mags could be made again for the civilians.

Since the end of the AWB, G3 mags have become much more plentiful. During the ban, they would go for $30-$50 a piece. After the ban, a bunch ended up on the surplus market, which flooded the market such that they could be picked up for as little as $1 a piece.
Paid Advertisement
--