Would this fit?

[dperlich]

Just purchased a M&P 10 and one of the first things I want to do is swap out the factory handguard with a free float - preferably one that doesn't clash with lines of the upper receiver. I was interested in getting the CMMG MK3 handguard, but noticed that it was not compatible with the DPMS low profile receiver. I've heard that the M&P 10 is based on the DPMS platform, and was concerned that I may have to scratch this handguard off my list. Would appreciate any input from the experienced and knowledgeable crowd. Thanks in advance.

 

[yqtszhj]

I have no first hand experience but I think you're right about It needing to be dpms compatible. From what I have read the dpms fit the m&p10.

 

[dperlich]

Might consider this then.

Yankee Hill Machine KR7 GII .308 Handguard - Mid-Length - YHM-5305-GII - Primary Arms

My intentions are to install a SS handguard in which the rails on the receiver and the gas block match up with the rails on the handguard.

 

[MistWolf]

The M&P-10 uses a 16 thread per inch barrel nut. Any replacement handguard must use the same

 

[copemech]

Midwest Ind. , Troy or Diamondhead in .308 DPMS LOW profile are a go. Not sure about others.

 

[sgtsandman]

My Apex hand guard is DPMS compatibale and has a clamping ring that bolts over the stock barrel nut. That method of mounting might be your best option to take guess work out of the equation.

 

[dperlich]

This is pretty much what I'm aiming for.

 

[dperlich]

I've contacted Unique ARs, and they seem interested in building a custom version of the Odin Works 308 Kmod forend. They just need to know what the thread pitch is for the barrel nut, and I don't know what it is.

 

[MistWolf]

I've contacted Unique ARs, and they seem interested in building a custom version of the Odin Works 308 Kmod forend. They just need to know what the thread pitch is for the barrel nut, and I don't know what it is.

If you were to read Post #4-

The M&P-10 uses a 16 thread per inch barrel nut. Any replacement handguard must use the same

 

[dperlich]

I did tell them that, and they still asked the thread pitch. Thought they were referring to something else and I was being clueless to what they were asking. Glad to know it wasn't me.

 

[MistWolf]

Ah. Normally there is a diameter measurement that goes with it, and it reads something like 1/4-24 which means 1/4 inch diameter and 24 threads per inch. The only thing I could find is that the M&P-10 uses the same nut as the DPMS low rail which is 16 threads per inch

 

[dperlich]

Yeah, I told them that. But they told me they only do cylindrical rails. Shop I'm not going with them.

 

[MistWolf]

One guy on CNCGuns said DPMS told him the threads are 1-7/16" X 16 - 2A

 

[dperlich]

OK, that clears things up a bit then. The guy said their rails fit DPMS upper and lowers with a thread pitch of 1.250" X 18. I'll just keep the info that you gave me for future reference.

 

[davkenrem]

Just purchased a M&P 10 and one of the first things I want to do is swap out the factory handguard with a free float - preferably one that doesn't clash with lines of the upper receiver. I was interested in getting the CMMG MK3 handguard, but noticed that it was not compatible with the DPMS low profile receiver. I've heard that the M&P 10 is based on the DPMS platform, and was concerned that I may have to scratch this handguard off my list. Would appreciate any input from the experienced and knowledgeable crowd. Thanks in advance.

This handguard will fit but my understanding and I did consider this rail myself. The rail on this and guard will be taller than the rail on you upper reciever.

From their website: "
Designed for our Mk3 uppers this hand guard is also compatible with SR25/LR308(High profile) uppers."

If your ok with how this would look and the fact that if you put a sight on the rail it will be too high you could use it, but I wouldn't. The M&P10 will line up with anything that has the DPMS Low Profile.

Good luck.

 

[dperlich]

Unfortunately, the rails that I do like would require me to install a new gasblock.

 

[MistWolf]

It would be worth it just to get rid of the boat anchor S&W calls a gas block