308 AR - DPMS or Sig??? [Archive] - Colorado AR-15 Shooters Club Discussion Forums

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mbl

10-31-2012, 16:39

I am looking for input from people who have actually owned or do own 308's by Sig and DPMS.

I think I need either a Sig 716 or a DPMS Mk12 308. I don't want to get into the piston vs. DI debate (ok, maybe just a little). I am more interested in people's experiences with the quality from each manufacture, part interchangeability and availability, reliability, accuracy, and customer service if needed.

Each model has features I like. The Mk12 has a 18 inch barrel and ambi safety, which is a plus for me being left handed. It also has a button rifled barrel. The Sig is piston operated which I like the idea of, but with a 16 inch barrel. Also not sure, but I suspect the Sig's barrel is cold hammer forged, so I would think that the DPMS may be inherently a little more accurate.

I am not sure that the barrel length difference is that important in the accuracy department. I would loose a little FPS in the 16 vs. the 18 but not enough to be significant.

Both can use the Magpul 308 mags, which is nice. I have held off on getting a SCAR 17 due to short supply of mags and other spare parts.

This would be a range gun primarily, and maybe used for some white tail back East.

Thanks for any feedback or experiences anyone is willing to share.

spyder

10-31-2012, 16:49

Those are your only choices?

I wouldn't worry about the barrel on either as both have just the run of the mill barrels that are not really anything to gawk at. If you think that a hammer forged barrel is horrible, I would ask you to shoot your AR10 next to an Hk 91... You're not really looking at anything special with either of those two (Sig & DPMS). Honestly, hold it up to your shoulder and see how it fits, go with the better. When you get into the AR platforms (either the 15 or 10), you will get a million different answers, none of which are wrong or right for the most part, just opinions, which shouldn't sway yours. Get what fits well as that is what you will shoot better with. [Beer]

On a side note, the piston system is + for me.

I would also say to get this:
LWRC M6A5 16" SOPMOD
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=314025402

Or read this soon and jump on this bad boy! It is at a great price at $1750. I have owned one and loved it...
POF XP-308 Piston AR 10
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=313342536

BPTactical

10-31-2012, 17:06

With SIG you have one source of replacement parts and many parts are proprietary.
Something to consider.

You are probably the biggest variable between the two rifles.

ChunkyMonkey

10-31-2012, 17:14

Or read this soon and jump on this bad boy! It is at a great price at $1750. I have owned one and loved it...
POF XP-308 Piston AR 10
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=313342536

Wow..that's a great deal.

brutal

10-31-2012, 18:33

Bert, aren't they all pretty much proprietary?

Are you going to run it suppressed? That was a deciding factor for me to get into the Sig716 Patrol (piston).

POF and DPMS get great reviews. If you want to pop for double your money, double your fun, Larue OBR.

My Sig716 shoots <1MOA, more like 3/4" with match ammo. It still shoots pretty damn good with PPU blaster. It's VERY consistent. I've shot it up to 600yd on steel and nearly as good as my 700P bolt gun.

When I first got it, it wouldn't cycle and had to go back to Sig. They fixed it promptly. Polished chamber, cleaned up gas port, and got a free trigger job and extra mag and a sweet little love note from the Smith. Top notch in my book.

There's one thing about it that bugs me and that is the rail mounting. There's a little wiggle in the free float that I've needed to shim to stop. I don't know that three's much they could do to remedy it as it's probably "within tolerance" but it's something that I can't tolerate without a fix.

If you can fondle and shoot each one, it will be easier to decide. There's probably one of each up in your neck of the woods, but if you want to drive until your ass hurts and shoot mine at BLGC some time, PM me.

SideShow Bob

10-31-2012, 19:22

Check out the Armalites, the new models (A) will accept 3rd party magazines.
[Tooth]

brutal

11-01-2012, 00:55

P.S. I don't know how available they are as everyone seems to be out of stock, but Sig also makes the 716 Precision Marksman 20" http://sigsauer.com/CatalogProductDetails/sig716-precision-marksman.aspx

http://sigsauer.com/upFiles/catalog/product/716-Precision-detail-hero.jpg

I see an ambi safety on it too and they both have ambi mag release.

mbl

11-01-2012, 10:03

Those are your only choices?

These were the 2 I had focused in on. I would love the POF or LRWC, but these 2 fit into the budget I have and had some features I liked.

I will check out the Armalites and see what they have to offer also.

Thanks for the input from everyone.

One question about this post, I see it was moved from GD to AR-15 Specific Forums\AR-10. But I do not see the AR-10 section if I am just browsing the AR-15 Specific section. Any idea whats going on?

brutal

11-01-2012, 11:58

https://www.ar-15.co/forums/showthread.php?t=69781

Cman

11-01-2012, 15:06

I have a DPMS and love it! Shoots any thing I've run through it. The last owner was doing .5 moa. I don't do that well [ROFL1].

ray1970

11-01-2012, 20:21

Skully

11-02-2012, 09:53

I'll toss a vote for CMMG. (Oh, wait... that wasn't one of my choices, was it?)

The CMMG uses the DPMS pattern parts and Magpul mags. Skully has one and it shoots great. I'm in the middle of putting one together as we speak. Mine isn't a factory rifle so don't base your opinion off how mine looks....

I see you mentioned your winter project might be done faster than you think. You got the muzzle device, did you get the BCG and internals yet?

I went with a DPMS/SAR25 pattern due to cost and availability of parts out there. I have seen some pretty nice setups, but notice a lot of the 308 AR builders are going for long range precision, I must be the outcast with my idea of smaller, middle of the road theology. [Tooth]

rootbrain

05-04-2013, 15:22

I see you mentioned your winter project might be done faster than you think. You got the muzzle device, did you get the BCG and internals yet?

I went with a DPMS/SAR25 pattern due to cost and availability of parts out there. I have seen some pretty nice setups, but notice a lot of the 308 AR builders are going for long range precision, I must be the outcast with my idea of smaller, middle of the road theology. [Tooth]

Nope, I'm with you. I don't really need semi-auto for long range precision, I have my Rem 700 .308 for that. Bolt is fine because shots won't be rapid. And it has the 26" bull barrel, so won't be dragging that through the woods.

My DPMS LR308 is for penetration and putting rounds quickly downrange with minute of bad guy accuracy.

Now if Magpul with get back on the Pmags manufacturing wagon. Impossible to find for a good price.

Rootbrain

rockhound

05-10-2013, 06:55

My new dpms recon .308 will be here monday. Looks like a decent compromise of accuracy and battle rifle capability

rootbrain

05-10-2013, 13:24

My new dpms recon .308 will be here monday. Looks like a decent compromise of accuracy and battle rifle capability

Just wondering what you mean by compromise. I chose DPMS as the best AR10 within a certain price range. The one I could afford. And parts, upgrades etc. are more available.

Rootbrain

Jer

05-10-2013, 15:05

Just wondering what you mean by compromise. I chose DPMS as the best AR10 within a certain price range. The one I could afford. And parts, upgrades etc. are more available.

Rootbrain

Do yourself a favor and stock up on 20rd .308 Pmags while you can. Throw the magazines that come with the rifle in the trash can post haste. Do that and you'll be just fine.

rootbrain

05-12-2013, 22:09

Do yourself a favor and stock up on 20rd .308 Pmags while you can. Throw the magazines that come with the rifle in the trash can post haste. Do that and you'll be just fine.

Nobody has 'em :(

But I will as soon as I can.

Edit: just got 2 more factory 20 round mags. The all shoot with no issues.

Pic added
http://img.tapatalk.com/d/13/07/25/qy3epeda.jpg
Rootbrain