M&P 10 not DPMS format?

[c good]

I've read that the M&P 10 is not a 100% DPMS format. That it takes a proprietary bolt and barrel nut? I thought that it was a fully compatible rifle. I don't want to start hunting down parts that are proprietary to S&W. I want to be able to get parts from whatever source has them available. Is this true? Thanks for any input. c good

 

[fperg]

c good

Not sure what you're trying to accomplish?

DPMS may not be mil-spec but their 20-round Mags work in the MP10

...and there's a variety of Quad Rails to choose from over the shipped plastic

 

[freedoom]

The barrel nut is DPMS compatible. I don't know about the bolt.

Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

 

[Blueapplepooh]

I've read the bolt is proprietary

 

[Arkaden]

I've read the bolt is proprietary

This is true.

 

[Elmer]

Not exactly sure why we care if the MP10 is "compatible" with a bottom tier rifle.

It uses the SR25 pattern mags, and most of the other parts are AR pattern. It has some proprietary parts, just as other .308 weapon systems do, Colt 901, LMT, etc.

Perhaps in a year or two, we'll be discussing whether other .308's are MP10 compatible.

 

[cb4017]

What Elmer said!

These rifles are well made, reasonably easy to personalize, surprisingly accurate and reliable.

Not to mention S&W has one of the best customer service reputations in the industry. I'm confident if something breaks on my rifle it will be fixed.

 

[rojodiablo]

Not exactly sure why we care if the MP10 is "compatible" with a bottom tier rifle.

It uses the SR25 pattern mags, and most of the other parts are AR pattern. It has some proprietary parts, just as other .308 weapon systems do, Colt 901, LMT, etc.

Perhaps in a year or two, we'll be discussing whether other .308's are MP10 compatible.

Fact is: The DPMS platform IS what the M&P 10 is.
The bolt IS interchangeable with the DPMS. Extractors, barrels, etc. are all interchangeable.

The Bolt would only be proprietary due to headspacing. An AR 10 bolt will fit in a DPMS rifle, with the exception of incorrect headspacing.

So, other than the S&W logo, the rifles are pretty much the same.

 

[ole-cowboy]

Fact is: The DPMS platform IS what the M&P 10 is.
The bolt IS interchangeable with the DPMS. Extractors, barrels, etc. are all interchangeable.

The Bolt would only be proprietary due to headspacing. An AR 10 bolt will fit in a DPMS rifle, with the exception of incorrect headspacing.

So, other than the S&W logo, the rifles are pretty much the same.

Is this firsthand knowledge?

Reason I question is that a number of other people have reportedly already tried this, and have reported a no-go.

(from a different forum)

 

[rojodiablo]

Is this firsthand knowledge?

Reason I question is that a number of other people have reportedly already tried this, and have reported a no-go.

(from a different forum)

Had one apart for cleaning; friends' new rifle. Parts are interchangeable. Like I said, not sure on headspacing. But the S&W bolt in my rifle cycled ammo thru.

Rifle is not bad, but for those thinking it has something incredible to it, the one bonus is the 5R rifling on the barrel. Other than that, the barrel is phosphate coated, and the carrier key is the only chromed area.
I would really like the 5R 18" barrel; that would be a great compromise length rifle right there!

 

[ole-cowboy]

Had one apart for cleaning; friends' new rifle. Parts are interchangeable. Like I said, not sure on headspacing. But the S&W bolt in my rifle cycled ammo thru.

Rifle is not bad, but for those thinking it has something incredible to it, the one bonus is the 5R rifling on the barrel. Other than that, the barrel is phosphate coated, and the carrier key is the only chromed area.
I would really like the 5R 18" barrel; that would be a great compromise length rifle right there!

According to S&W the barrel is melonited... there are differing opinions, but it seems it has all the advantages as chrome lining with none of the disadvantages

 

[rojodiablo]

According to S&W the barrel is melonited... there are differing opinions, but it seems it has all the advantages as chrome lining with none of the disadvantages

Look at their website. Under M&P10, look up specs. Says 'Corrosion resistant finish'.
Says nothing about melonite- whereas if you look up the old specs of the M&P15 Sport, it stated 'Melonite'. And, now it does not. But.... if you look up the M&P 15 T, it states 'Melonite' for the barrel treatment.

Remember, the factory (All factories) state that specifications are subject to change. Sales reps are there to sell guns. Gun stores are there to sell guns. It's up to the buyers to check and see exactly what they are buying.
While I am sure that there are some M&P10's out there with melonite on them, the one I worked with last week had a phosphate coated barrel.

With that said, I do not think for a second that it makes it a lesser rifle. I wish I could get my hands on the 18" barrel.
My Sport has the 1/8 melonite treated barrel. I'd love to have that in an 18-20" version with the 5R rifling too.

 

[ole-cowboy]

I have resisted using posts from other forums, I figure its not kosher but:

M&P 10 barrel question - AR15.COM

Hi, The barrel does have a durable corrosion resistant coating inside and out. (Nitride/Melonite type coating.) We have found in our testing the this process is better than chrome lining, and offer protection internally and externally, and has better barrel life. The Barrel also features 5R rifling for decreased fouling and better accuracy. The M&P10 is compatible with the DPMS Lo-profile compatible rails. (Please be aware there are several types of so called "standards" for .308 AR rails. (Armalite, DPMS hi-profile, DPSM lo-profile )) Some manufacturers label them a such, and some don't offer all three heights. (This is mainly an upper receiver height difference and barrel threading.) The barrel threading of the M&P10 is compatible with the DPMS barrel threading. The two most popular .308 rail systems are from Troy or Daniels Defense. (See links below.)

Thanks! S&W

 

[unknwn]

The bolt is a standard DPMS styled part-
The -bolt carrier- is particular to the M&P10 though.

 

[jwallen]

M&P10 Rifle

I purchased a Aero Precision complete .308 upper receiver. It is not compatable with the M&P 10 rifle. Pin holes will not line up. Called Aero Precision in Tacoma, Washington and was informed that there upper receiver will not work on the M&P10 lower.

 

[BillyMagg]

Barrel Extension, Bolt, and Bolt Carrier Group are proprietary

I've read that the M&P 10 is not a 100% DPMS format. That it takes a proprietary bolt and barrel nut? I thought that it was a fully compatible rifle. I don't want to start hunting down parts that are proprietary to S&W. I want to be able to get parts from whatever source has them available. Is this true? Thanks for any input. c good

It is indeed true that the S&W MP10 Barrel Extension, Bolt, and Bolt Carrier Group are proprietary and NOT compatible with DPMS standard.. While several well meaning posters have stated that they are compatible, they are NOT.. there are possible solutions, if you do some research here on S&W forum, we have discussed this issue before... but Caveat Emptor, if you wish to change barrels, BCG's you are stuck with S&W parts which may be hard to come by.

Do your research, the large frame AR has no "mil-spec", even though many parts are labeled "mil-spec"...

So after researching, I ended up with Wilson Combat... now the Wilson Combat receiver set is also proprietary, but it will accept most DPMS compatible parts

 

[brazos609]

Do your research, the large frame AR has no "mil-spec", even though many parts are labeled "mil-spec"

I would say that the Knights SR-25 is the standard for 7.62mm format semiautomatic and select-fire carbine and rifle based on 30yrs of commercial and 20yrs military use.

 

[BillyMagg]

No MILSPEC for the 308 AR Platform

I would say that the Knights SR-25 is the standard for 7.62mm format semiautomatic and select-fire carbine and rifle based on 30yrs of commercial and 20yrs military use.

The Knight is a beautiful rifle, but it is NOT MILSPEC as there is NO MILSPEC for the 308 AR platform, the ArmaLite AR-10 is the only true AR-10, everything else is a 308 AR. Each manufacturer build their own rifles, to their own spec.. Smith and Wesson is no exception, their barrel extension and bolt carrier group are proprietary, as are Rock River's and on and on.. there are some posts here that contradict this fact,, but those posts will not change those specs.


Bottom line is if the M&P 10 is exactly what you want, buy it, its a great rifle...

But, if you anticipate making changes?? I did a lot of research prior to moving to the 308 AR platform.. I bought a Wilson Combat 308 AR because I did indeed make some changes, some not by choice, I did break an extractor.. Wilson Combat sent me a new BCG from another vendor,, it functions much better than the BCG that came with my rifle.. so rifles do break, I don't want to be waiting on the manufacturer to send me a part when they get too it, or when it comes back in to stock.. my recommendation is to buy a platform that does indeed accept all DPMS compatible parts.. the M&P 10 does not.. it really is that simple.

 

[BillyMagg]

Bolt Carrier Group and Barrel Extension

I've read that the M&P 10 is not a 100% DPMS format. That it takes a proprietary bolt and barrel nut? I thought that it was a fully compatible rifle. I don't want to start hunting down parts that are proprietary to S&W. I want to be able to get parts from whatever source has them available. Is this true? Thanks for any input. c good

Actually it is the Bolt Carrier itself and the Barrel Extension that are proprietary,, I have heard of issues with aftermarket charging handles and triggers... but some gents have no issues with the charging handle and triggers..

 

[markmagruder]

M&P10 not compatible with much.

I bought an allegedly DPMS 22" 6.5 Ballistic Advantage barrel. It does NOT fit the M&P10 bolt lug pattern. I had to cancel an order for Wilson Combat's super sniper barrels because they told me the M&P10's are proprietary and their barrels wont work/fit. Finding a barrel that is compatible with the M&P10 has so far been impossible. Do I dare look for a compatible BCG or even a bolt head?