M&P R8 loose Barrel Shroud Nut

Harbinger_of_lead

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I thought I would post about this issue as I know others have had similar problems with the M&P R8.

I have about 1,500 rounds of .357 magnum through my R8 since I bought it new. I keep it in my nightstand for home defense. Last night I was changing out the "around the house" ammo to speer gold dots and noticed the barrel shroud was loose. I see from other posts that it is a fairly common issue and will require a trip back to S&W to get properly tightened.

Although this is rather unfortunate and a bit of a hassle, I am not upset about the need for service. I understand that due to the use of an alloy shroud the torque of the nut is a bit of a challenge. Considering that re torque after initial use is common on all kinds of alloy items (like head bolts on engines), I wonder if S&W should evaluate its procedure for these guns before sending them out the door. I also wish there was a way to have the user torque the nut to avoid the downtime. I can't imagine that the process is so difficult that a user couldn't perform it at home with a proper torque wrench and keyed tool.

I called S&W and found out they are closed between Xmas and New Years. I guess there will be a bit of a backlog after the break. I will update as I progress through the warranty repair process.

In the meantime, the 629 will have to take the place of the R8 in the nightstand.
 
Keep us posted ! I got on the mailing list for the backordered barrel nut wrench...now that I have it, it lives in my range bag. My TRR8 has about 500 38 specials and around 150 357's thru it...and counting. Love this revolver ! No loose nut yet. While I appreciate S&W's service, I prefer not to mail my guns anywhere if I can avoid it. This is a simple fix that should be available at the user end if they choose that route. If you ever try to tighten it yourself just remember the threads are reversed....leftie tighty.
 
I ended up buying a wrench today and will let the group know when it ships. I don't see why it can't be tightened by an end-user.

I absolutely love the gun as well. The light weight is a main reason I like it, which is also why the nut gets loose I suppose. Anyway, I will let you know what happens.
 
What About the Wrench

Got the wrench today. The nut is now good and tight. Will shoot this weekend and let you know if I notice any issues. Planning on a retorque when hot.
I had the same issue with the shroud. I sent the revolver to S&W for repairs 1/12/2018. However, what is manufacturer and part number for the wrench that you bought? Thanks
 
R8 barrel nut wrench.



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I will resurrect this thread to add that I used the info contained to order the "EWK" barrel nut tool for my 327 R8.
The shroud became loose and I figured best to have the tool to not go through the hassle of sending the whole gun in. And just have the tool and tighten when necessary.
I was shooting my gun over the weekend and noticed something metal hitting every time a shot was fired. What I noticed was the barrel shroud had side to side movements. But not complete movement. There's a locking tab under the barrel that probably prevents the barrel from moving and keeps it in a "slot".
So, you can add my name as one of the few this has happened to. And I didn't believe this possible. I ordered that tool on Monday got it on Wednesday. Its $34. $38 shipped. And super easy to use. I just gave the nut a twist with my wrist and it's good and tight.
I would say, that it should be a tool that must accompany every 327 R8/TRR8/PC owner.

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