Anyone seen Breech face wear on their M&P 10?

[redrock35]

I recently purchased M&P 10 online that had supposedly never had been fired, but upon reciept of my "newish" rifle, I found it to be filthy inside.( of course the dealer I purchased it from said guy that he bought from bought it new and never fired it , FOS)
After a lot of gunk removal, I found that there was breech face wear and wondered if anyone else is was experiencing this type of wear? Is it normal and any concerns I should have? If anyone has pictures and or info estimating of rounds to reach ths type of usage, it sure would be useful.
First time ever getting less than what I bargined for from a online brick and mortar auction, and less one 20 round mag at that.
Thanks

 

[Rastoff]

Can you post a picture of what wear you see on yours?

 

[redrock35]

Here's a pic...

Can you post a picture of what wear you see on yours?

I thought I had attached to one earlier, thanks for taking time to help me remedy that. Have you seen this in a AR 10 before?

 

[Rastoff]

Frankly, it looks fine to me. S&W does at least one test fire on each gun before it leaves the factory.

Even so, I understand your concern. Here is my bolt face:

Now, technically mine is an LR308, but they are essentially the same gun. My BCG was made by a company called Fail Zero and is supposed to be a high end BCG. Yours looks as good or better than mine to me.

I can tell you for a fact that I have exactly 40 rounds through my gun because I built it and no one has fired it but me.

 

[lrrifleman]

I can't really speak from an AR10 perspective, but I have a few AR15s that have seen a high round count in competition.

It does look like you have a good amount of brass build up on your bolt face, that is a little disturbing. But what bothers me more is what looks (via the pictures) to be an inordinate amount of plating wear off of the face of the ejector. My AR15A2 service rifle has close to 4000 rounds through it, and my long range AR has 902 rounds through it, and nothing like what your picture suggests.

You might want to pick up a throat erosion guage from Brownell's and check (and continue to track) your barrel's throat erosion.

 

[redrock35]

Here's a better picture...

I can't really speak from an AR10 perspective, but I have a few AR15s that have seen a high round count in competition.

It does look like you have a good amount of brass build up on your bolt face, that is a little disturbing. But what bothers me more is what looks (via the pictures) to be an inordinate amount of plating wear off of the face of the ejector. My AR15A2 service rifle has close to 4000 rounds through it, and my long range AR has 902 rounds through it, and nothing like what your picture suggests.

You might want to pick up a throat erosion guage from Brownell's and check (and continue to track) your barrel's throat erosion.

I'm hoping it was the picture that made it look that way, when I saw your post last night, I removed the bolt and cleaned it up better, do you still see what you were mentioning about the plating wear on the ejector? Thanks for taking time to help.

 

[redrock35]

Yours has precise lines

Frankly, it looks fine to me. S&W does at least one test fire on each gun before it leaves the factory.

Even so, I understand your concern. Here is my bolt face:

Now, technically mine is an LR308, but they are essentially the same gun. My BCG was made by a company called Fail Zero and is supposed to be a high end BCG. Yours looks as good or better than mine to me.

I can tell you for a fact that I have exactly 40 rounds through my gun because I built it and no one has fired it but me.

I did some more cleaning once I got the bolt out and see it looks better than I thought, but I have to say, your s looks crisp and precise, where as if mine wasn't made as well. How much better does your custom built .308LR feel compared to the stock model config.? Have pics?

 

[lrrifleman]

Your bolt face and extractor look much better than they appeared in the original photo. The phosphate finish on the face of the bolt locking lugs does show wear, but that is to be expected.

Based on the bolt face currently, I feel that the rifle you were sold was not misrepresented.

 

[Rastoff]

After seeing the cleaned up bolt face, I agree that it was not misrepresented.

Yes, I think the machining on my bolt is a little more crisp. Of course I probably paid a dollar or two more for it.

How much better does your custom built .308LR feel compared to the stock model config.? Have pics?

That's a difficult question to answer. I've never fired a stock AR10. However, I can say that my rifle is really nice to shoot and I'm glad I built it.

I built it specifically to be used as a long range tool. It weighs exactly 11lbs. As nice as it is, it was expensive. I'm afraid to total up the individual parts because I don't want to think about the size of that number. Still, it's a great gun.

 

[redrock35]

Very Impressive...

After seeing the cleaned up bolt face, I agree that it was not misrepresented.

Yes, I think the machining on my bolt is a little more crisp. Of course I probably paid a dollar or two more for it.

That's a difficult question to answer. I've never fired a stock AR10. However, I can say that my rifle is really nice to shoot and I'm glad I built it.

I built it specifically to be used as a long range tool. It weighs exactly 11lbs. As nice as it is, it was expensive. I'm afraid to total up the individual parts because I don't want to think about the size of that number. Still, it's a great gun.

Whoa, That's a very nice build, time and money were only part of the build itself I bet. If you're anything like me, research can take a large portion of the build time.
I went all out on a SAM7R from Arsenal but nothing close to what you have constructed.
Looks as if you could remove low orbiting space debris with that scope, whats the specs on it?

 

[Rastoff]

If you're anything like me, research can take a large portion of the build time.

Oh baby, you have no idea. I spent more than 6 months researching my first "long" distance rifle. Made the mistake of buying a right hand bolt rifle; I'm a lefty. I could work it, but it just wasn't right. This one is still mostly considered a right hand gun, but the semi-auto part makes it more lefty friendly.

Yes, I spent much time researching it. Most have told me the 18" barrel is too short. I disagree. I'm just stubborn enough to decide to prove everyone wrong about the barrel length. Even if I fail to get the long distance accuracy I'm after, I can easily change the barrel.

Looks as if you could remove low orbiting space debris with that scope, whats the specs on it?

Not really good enough for space debris, but still really nice.

Like you, I really want to be sure to get the right thing the first time. I took about a year before I landed on that scope. It's a Vortex PST 4-16x50 FFP with EBR-1 reticle. Both the reticle and turrets are in miliradians.

There is so much to learn when it comes to long range precision, I consider myself to be a rank amateur. I have much to learn and need to spend a lot more time with the gun. So far, I've been able to put up one .8MOA group at 200 yards. I hope to be pinging targets at 500 yards and more soon.