Failure, failure

[Whacker]

Brand new M&P 15 would not feed following round. Sent back to company. Got it back. They honed chamber and changed ejector. Now it fails to feed and fails to eject. Sending it back for a 2nd time. Has anyone else had these problems or is this just the story of my life? Using P-Mag and Win. ammo with plenty of oil.

 

[jagular]

Mine functions flawlessly. Did you try a different mag and brand of ammo before you blamed it purely on the rifle?

 

[gdnagle]

Like jagular stated above and also cleaned and lubed properly. Not a problem I've heard about on a new rifle but a lemon can get by anyone. Make sure you let S&W know second time for same problem.

 

[Whacker]

Yes I've tried Win. .223, 5.56, Rem. and some brand I can't remember. Also tried new and old metal mags. including one Colt mag. Cleaned spotless and well oiled with Rem Oil. The reason I bought it was for the reliability. I read where guys put 1000's of rds. thru theirs. I can't get 1 mag. S&W is working with me. Their going take another look at it. Thanks for the reply.

 

[Waywatcher]

Rem oil isn't helping matters any. Too thin of an oil for an AR15.

Put a few teaspoons of Breakfree CLP on it, in the appropriate locations.

Sucks that you have a malfunctioning rifle, but good luck!

 

[RobbW]

When you fire, the chamber and bore should be dry and free of oil. Just to be clear, the oil is for BCG and other mechanical parts.

 

[MichiganScott]

Sounds like gas system issues, maybe a poorly drilled gas port, or maybe problems with the gas system in the front sight block or the gas tube itself, or even the key on the bolt carrier. You were right to call up S&W again and turn it back over to them.

 

[Whacker]

Thanks for all the input. I just can't help but feel a little nervous about sending it back a 2nd time. I will definitely keep everybody updated.

 

[rojodiablo]

Rem oil isn't helping matters any. Too thin of an oil for an AR15.Put a few teaspoons of Breakfree CLP on it, in the appropriate locations.
Sucks that you have a malfunctioning rifle, but good luck!

A: Not true.

B: Couple of TEASPOONS???!!!

Do you get off on bad info?

The rifle takes a few DROPS of oil on key surfaces. If you are shooting a LOT, and are not in a position to really clean it, then a spray of something like CLP or any similar light oil will do the job to flush gunk from the chamber area and keep you going.
This said, since the rifle is a single shot at the moment, none of this applies.....

To give you a better idea of likely fixes, I would have to have you try several things line item and get back to me. I am assuming the rifle went back to S&W again; if so, they will get it right, sooner or later.

Their QC has been taking a hot on the rifle side a bit as of late.

The Pmag and the ammo are NOT the issue in this.

 

[Whacker]

Got my prepaid label by email today. Packed the weapon up again. Ran the FedEx man down ( very small town ). And away she went. They can keep it as long as it takes to transform it into a fully functioning weapon. Looking for a glorious reunion.

 

[arizona98tj]

Hopefully they'll get it right this time around.

 

[Whacker]

I'm thinking positive thoughts.

 

[Gischileu]

Positive waves, Moriarty, positive waves!

 

[Waywatcher]

A: Not true.

B: Couple of TEASPOONS???!!!

Do you get off on bad info?

The rifle takes a few DROPS of oil on key surfaces. If you are shooting a LOT, and are not in a position to really clean it, then a spray of something like CLP or any similar light oil will do the job to flush gunk from the chamber area and keep you going.
This said, since the rifle is a single shot at the moment, none of this applies.....

Rem oil is almost entirely mineral spirits. If you don't believe me, look up the MSDS on it. Mineral spirits is a poor firearm lubricant, and especially poor in an AR15. It is better than nothing, this is true. Rem Oil dries out very fast, if you notice, because it is basically mineral spirits.

My Colt 6920 was cleaned once when brand new, and has been lubed generously--to the point of nearly dripping--and has run like a clock for 1500 problem free rounds. Still haven't cleaned it again, I just keep adding CLP and hoping for more range time. CLP works well because it lubes and dissolves carbon, preventing carbon build up and dissolving any carbon present, all while still lubricating. If I opened up my Colt, you would probably gasp at the level of oil, but you would also probably guess the round count since cleaning at a much lower number.

I don't use Slip 2000 products currently, but here is a good article to read.
S.W.A.T. MAGAZINE ? FILTHY 14 : Slip 2000 Official Blog

So, I encourage you to do some additional research on modern AR15 lubrication; you will find that in general, more lube is better than less, and my recommendation of a few teaspoons, in the appropriate locations will work well. I am speaking from personal experience as well as from current best practices.

 

[Whacker]

Thanks, I'll learn the weapon once S&W repairs it for good.

 

[bp231986]

Thanks for all the input. I just can't help but feel a little nervous about sending it back a 2nd time. I will definitely keep everybody updated.

Whacker, i wouldnt worry about it to much, S&W will make it right. Just sucks that you will have to wait to go shooting but you will be up and running before you know it. Once you get it back and it runs like a horse all your troubles will be forgoten. Keep us updated.

 

[Whacker]

Thanks bp231986. Words like yours lift my spirits and give me hope. Believe me, when I get it back I'll keep you all updated.

 

[Whacker]

S&W received my weapon yesterday 11/5/13. I called and told them I was rather nervous about this fix. The contact said he would make a note of my concern. He told me a 2nd return was unusual, and a supervisor would oversee this fix.

 

[rojodiablo]

I don't use Slip 2000 products currently, but here is a good article to read.
S.W.A.T. MAGAZINE ? FILTHY 14 : Slip 2000 Official Blog

So, I encourage you to do some additional research on modern AR15 lubrication; you will find that in general, more lube is better than less, and my recommendation of a few teaspoons, in the appropriate locations will work well. I am speaking from personal experience as well as from current best practices.

Meh. I ran a Colt, back in the day. We subjected them to salt water all the time. Boat rides, lots of fun.....We would hose the rifles off, then spritz them up a bit. Even in that environment, we did not run them that wet.

My Sport is one of the better traveled ones in this forum. I lost accurate count at around 12,000 in 1.5 years. Not 1200..... I have had it over 2 years now. It's got a few more miles on it than when I lost count.

I am pretty sure I know how much lube the rifle takes to work; and TEASPOONS are more than I would ever deal with. My high count for a single day is 1150 rounds. Brace yourself; 4 drops of oil did the trick.

And, current best practices...... you will not show me ANY solid recommendation to pour teaspoons of oil into your rifle. Nor will you read in any owners manual to do so. Nor will you find any combat training manual from the USMC, USN, US Army stating such. A FEW well placed drops. Really; that's all there is to it.

Current best practice is to not feed BS to the forum.

 

[Whacker]

On the way back.

Just got off the phone with S&W. After almost 2 weeks my M&P 15 is on the way back to N. Carolina. The spokeswoman told me they replaced the barrel and ejector. This is 2nd time the ejector has been replaced on a brand new gun. First time replacement for the barrel. Please dear GOD smile upon me.