Everyone has there different beliefs as far as breaking new guns in. Some people clean, shoot one, clean, shoot one... doing this for about 15 rounds, then put 150-200 through it, then clean, and repeat with another 150 or so. Some people clean, and out a few hundred rounds through it.
I just take mine to the range and put ammo through them until I'm happy, and then take it home and clean it until the next trip to the range. I took a new AR-15 to the range about a year ago straight out of the box and put 500 rounds of XM193 through it without cleaning it. Ran fine without any issues. Never had any issues with any of my guns in the 14 years I've been shooting, and I've been breaking them in the same way the whole time. All guns have always been reliable and accurate.
Go by the manual(if you even bother reading it), or just develope your own technique.
No matter which way you decide to break in your gun; whether it is running it until it stops then cleaning, or babying it, a good rule of thumb is if it is going to be your carry weapon, put at least 500-1000 through it or until you are satisfied with its reliability.
Personally I took it home gave it a good cleaning and lube then put 300 through it and I repeat the process as often as I can.
An accurated rifle requires a lot of break in, a handgun such as this doesn't. Clean it, put rounds through it (200+) and clean and lube. Just do no over heat the barrel. Usually not a concern unless you have 6 mags loaded and burn through them. Have fun!
I drench with a CLP of which my favorite right now is Eezox. Wipe down the pistol, clean the bore, overlube a little bit and then put at least a couple hundred rounds through it including practice ammo and carry ammo.
Just clean it to remove the factory gunk out of it, and then run a bunch of ammo through it. I'd recommend 1000 rounds as some have discovered problems as late as 600ish rounds. I only say that if this is going to be a carry gun or if you're just dying to know, like I was, if you are among the minority of M&P owners who have problems with their pistol.
It really depends with me, sometimes I disassemble and clean first, sometimes I don't. I've never had any problems shooting a new gun I didn't clean first. I realize it may make more sense to clean them first when you really stop to think about it, but as I said, I've never had troubles either way.
I did not clean my M&P 9 before shooting it. It is currently back at S&W for shooting 6" low, but I don't think cleaning it first would have made a difference!
1. Do a quick field strip (i.e. take the slide off, remove spring, remove barrel), and clean all the parts. Make sure you snake the barrel or use something similar.
2. Go shoot it. 250 rounds is bare minimum (IMO). If you intend on using it as a conceal carry weapon, I would put at least 500 rounds. Although the price of ammo is ridiculous, just think about it this way...is your life worth the price of 500 rounds?
3. Clean it after you're done. Step 1 above should be suffice. I would do a thorough clean when I hit 1000 rounds.
4. Go shoot it again as soon as possible.
There is some exception to the above guide, but this is the bare minimum. If you intend on carrying a larger caliber firearm (i.e. .45 cal) or a subcompact firearm (i.e. M&Pc), shooting 500 rounds in a day can lead to a very long long day and a very sore hand. I would shoot lower amount of rounds (i.e. 250), but I would go back to the range asap.
A forum community dedicated to Smith & Wesson M&P Pistol owners and enthusiasts. Come join the discussion about optics, performance, gunsmithing, troubleshooting, reviews, accessories, classifieds, and more!