Smith and Wesson M&P 5.7 Part 1 Full Disassembly 

You're most welcome. Glad I could help. Certain handguns can be tricky and this is one of them.

Good information to know! Never even thought about trying a 12 point wrench. I planned to refinish it anyways so didn't mind it getting a little scratched up. Thank you for the information!!!

You're welcome! Part 2 Full Reassembly is now up finally as well. Hope they help!

Yes they did tremendously, I am watching it now.

As was I. I think making the block safety out of plastic was pretty stupid to be honest. Sorry to hear yours sheered, but as soon as I saw the design i knew it would be a future failure point. Glad my video was able to help you! Out of curiosity, is S&W sending you the parts in the mail? I know most manufacturers are funny about that. Really hoping someone makes a stainless steel upgrade.

​​@@SmittysGunsmithin I called customer support and they agreed to send me 2 replacements. I'm going g to replace the defective one and use the 2nd to attempt to machine one following the oem design.. idk if I'll be successful but if I am ill start pumping some out for the market. I kinda want to ask them to send me a complete parts kit, just to have one incase shipping breaks down again..

@The-Westcoast-Wanderer Awesome! If you get some machined please let me know! Awesome that S&W sent you replacements!

I finally got a handful of replacements from S&W! I should be able to get the upgrade replacements into production in the next couple of weeks!

Awesome, I would sure like to get a few metal ones from you when you get them machined! Thanks for staying in touch!

I don't have customers yet as I'm in the process of getting set up to get my FFL so I can go into business. I simply do this as a hobby for no profit currently. Havnt ran into any repair issues yet or heard of any firing pin breakage with this model yet. 400 rounds firing pin breakage is crazy. That shouldn't happen. My guess would be improper heat treat from factory. If it gets repaired and it breaks again, I would see if I could find an aftermarket one. Might be hard. There's no reason a firing pin should be breaking at that low a round count.

Actually it doesn't. Owners manual shows a field strip disassembly and reassembly only. This video covers complete disassembly and reassembly.

I didn't care. Just wanted to get it off. It's gonna be refinished anyways.

Only place I can think of is directly from Smith and Wesson, if they'll provide them. Havn't seem many aftermarket parts yet.

Thank you sir, hope you found it helpful!

Most firearms companies are cutting costs and opting for cheaper finishes, unfortunately.

@@SmittysGunsmithin yea i could see that, i will say though canik is my favorite, i have 3 and i just absolutely love them.

I havn't tried Canik yet@@ryancornelius1007

I'm not sure. I havn't even held a model with the thumb safety to see how they are designed. What I do know is S&W will not sell the thumb safety nor will they go back and add one to a firearm that wasn't made with it. Can it be done? Yes, absolutely. If you can find a thumb safety used for sale, have the capability to manufacture one or pay someone to, and potentially with some modification to the firearm. Is it gonna be easy, cheap, or practical? Not likely.

​@@SmittysGunsmithin Well damn! I didn't expect it would be that difficult. I don't own one yet but i was hoping to purchase one of the FDE versions and add a manual safety. I guess thats not really an option... Thanks for the information!

I'm not sure. I havn't specifically heard of anything and a Google search didn't yield anything. I havn't done any trigger work on S&W semi autos since their first generation M&P years ago so I couldn't tell you if other M&P triggers would work in this or not. My 5.7 had a nice pull out the box, and I'm a trigger snob. M&P 2.0 triggers are a vast improvement over S&W past. I imagine a nice flat trigger would be awesome though.

I do not know if in fact you can get the frame plugs from Smith and Wesson or not, but according to this possibly you can. But if you can get the filler plug for the frame, remove the safety and I think the detent and spring that holds safety in two positions, yes you should be able to. www.mp-pistol.com/threads/the-proper-way-to-remove-plug-thumb-safety.31812/

I would not remove the safety without ensuring you have a frame plug. Otherwise you will leave an opening for things to get in there and jam up the mechanisms.

@@SmittysGunsmithin I appreciate the reply!

@cdrpyro You're welcome!

It's actually recommended to at least field strip all new firearms and clean them before shooting to remove any extra oils, grease, dust, packing materials, and possibly metal shavings left over from manufacturing process. Most user manuals will advise you to do same. Being a gunsmith, I broke it all the way down to thoroughly clean everything and inspect everything.

@@SmittysGunsmithin thank you for replying I do the same just wanted to know because the mechanics of this is almost closer to my rifle and you can 1000 rounds without cleaning but thank you for the video !

Yeah alright I wouldn't recommend 1000 rounds without cleaning of course, realistically it might be able to still go that long without any significant malfunctions

Yessir, a 5/64 Allen key or hex head bit.

@@SmittysGunsmithin thank you friend can you please tell me what size screws for the holosun optic thank yoi

That I'm not sure of. The Holosun didn't come with the screws? I'm pretty sure it should have. If not contact Holosun.

@@SmittysGunsmithin thanks friend it came with them but they dont fit

Hmmm.... I havn't installed holosun on M&P 5.7 before so I can't offer you any insight into what screws to use. Contact either Holosun or Smith and Wesson and either/or should be able to get you the right screws. I've only installed Holosun on Glock and Sig. Sorry I can't be of anymore help.

I believe so, and certainly appears that way to me, but I have not seen one of the thumb safety models to verify. I have reached out to Smith and Wesson for an answer to your question and will update you when I get a response.

So S&W contacted me back promptly. They advised they do not sell safeties aftermarket for liability reasons, they advised they also do not add them to non safety models as part of their services. If you could get your hands on one second hand, I think it might work. But not having seen how this specific model safety is designed, I can't say for certain. Best answer I can get for you currently.

@@SmittysGunsmithin I feel like u should be able to if u get the whole rear trigger with one already installed that’s when more parts become available I can’t find anything available yet not even just the safety

I too think it could be done, like you said, however, good luck finding a safety to try it. If I could find one, I'd try it on mine. I specifically wanted the non safety model though.