New M&P 15 OR - Newbie needs help

[rdjohnson37064]

I just bought an M&P 15 OR. I haven't been able to get to the range yet to fire it.

I've field stripped it and wiped the factory preservative off. Loaded a magazine with PMC Bronze 223 Rem FMJ-BT ammo.

As I worked the charging handle several times, the first few (8-10) cartridges fed through fine. But, then, cartridges stopped being ejected from the camber. Now, the cartridges are hanging up and were not being stripped cleanly from the magazine.

I'm a newbie and I've heard that these guns need to be run "wet". So, could the problem be a lack of lubrication? Could it be the ammo? Or, should I not be manually cycling cartridges through the gun?

I don't want to send it for service unless it is necessary. What could be the problem? Thanks for any help.

 

[rdjohnson37064]

I just bought an M&P 15 OR. I haven't been able to get to the range yet to fire it.

I've field stripped it and wiped the factory preservative off. Loaded a magazine with PMC Bronze 223 Rem FMJ-BT ammo.

As I worked the charging handle several times, the first few (8-10) cartridges fed through fine. But, then, cartridges stopped being ejected from the camber. Now, the cartridges are hanging up and were not being stripped cleanly from the magazine.

I'm a newbie and I've heard that these guns need to be run "wet". So, could the problem be a lack of lubrication? Could it be the ammo? Or, should I not be manually cycling cartridges through the gun?

I don't want to send it for service unless it is necessary. What could be the problem? Thanks for any help.

 

[Joni_Lynn]

I'd suggest that you lube it up as the instruction book probably explains and take it to the range. Live fire will show if it has a problem.

Welcome to the forum.

 

[jdh]

Ummmm,
Don't do that with live ammo. The firing pin in as AR is free to float around. Letting the bolt fly on a cartridge with a soft primer can result in a slam fire.

Lube it and go shoot it. Not matter how hard you work the charging handle it is not the same as shooting it. And don't worry to much about minor feeding or extraction problems in the first fifty to hundred rounds. Squirt some more oil in the ejection port to wet the bolt and keep shooting. Clean it well after the first hundred and you should be ready to put it into service.

 

[Double-O-Dave]

jdh is 100% dead on accurate about cycling live ammo thru your piece - that is an accident waiting to happen. Use a good quality lubricant, I suggest Break Free CLP. Also, I'd recommend not trying to "torture test" your piece, but to give it a good cleaning and lube after each range session just as jdh mentions.

Best of luck,

Dave

 

[tom turner]

M4/M16/AR15 rifles like to be well lubricated . . . new . . . broken in . . . and well-worn!

Your bolt most surely arrived nice and wet. Go ye, and do likewise and you can expect it to be quite reliable.

I've gotten a new one within the last month or so too. There's really no trick to breaking them in, except I wouldn't recommend steel cartridge ammo for the first few hundred rounds . . . just brass.

That, and keep it lubed and you should be good to go. Mine has worked flawlessly and I suspect yours will too if you keep it modestly lubed.

 

[3-gun]

Take a large (.45 size) wet with brekfree,clp etc. and wipe down the bolt carrier and inside the receiver till everything is nice and wet. put a drop on the hammer ant trigger spring coils and a drop on the hammer and trigger contact point(the shiny part).
Insert a 30 round mag and shoot the hell out of it.

. Put 200 rounds or so through it before you clean it to buff out the chrome bbl.

 

[Centauro97]

You need to have more than one magazine to test/break in.

The great majority of problems relate to the magazine.

Don't get flustered yet. Shoot at least 100 rounds before you start to worry. And use more than on magazine.

C97

 

[ditrina]

I would agree more mag problem than weapon.. shoot shoot shoot.. as said with different mags finding the one you like .. an works.. and go from there..