Smith & Wesson Model M&P 340

Between a time-tested company reputation that’s over 150 years strong and the classic J-Frame design, there’s plenty going for our very first Gun of the Week: The Smith & Wesson M&P 340.

This lightweight, five-shot, double-action-only revolver is perfect for concealment and comes with an internal hammer that’ll keep it from catching on the draw. It’s chambered in .38 Special +P and the heavier .357 Mag., providing shooters with some options when planning their personal defense.

Those traits were enough to make the M&P 340 the personal carry gun of one Mark Keefe. You may have heard of him: Noted gun geek, American Rifleman Editor-in-Chief and a guy that’s handled quite a few firearms in his life—and this is the one that he’s selected to be at his side.

Smith & Wesson has succeeded in helping to protect citizens around the world since 1852, and beauties like the M&P 340 leave no doubts as to how or why.

Technical Specifications:

Caliber: .357 Magnum or .38 S&W Special +P
Capacity: 5 Rounds
Barrel Length: 1.875”
Overall Length: 6.31”
Action: Double Action Only
Weight: 13.3 ounces
Material: Scandium Alloy Frame, Stainless Steel Cylinder
Finish: Matte Black
MSRP: $869

For Further Reading:

Wiley Clapp: My Five Favorite Firearms
Mark Keefe: Advice on Carry Guns


Note: The M&P 340 depicted below is equipped with a Crimson Trace lasergrip. This is not included on the out-of-the-box model.

Share |



Enter your comments below, they will appear within 24 hours

Your Name

Your Email

Your Comment

33 Responses to Smith & Wesson Model M&P 340

Ron W wrote:
January 20, 2013

Bought one of these as a retirement gun after 33 years in law enforcement at local & federal level. Best 5 shot I've ever owned. Light enough & small enough to carry in front pocket. I carry 110 grain magnums which reduce the recoil, but still give high velocity. Sights are the best I've seen on any 5 shot revolver.

joe T wrote:
November 01, 2012

I reading all the coments,but this gun does jump around a little,but its a concealed gun!I own s n w 340 best concealed gun ever!

JOE S wrote:
August 14, 2012


ChrisP wrote:
July 24, 2012

I've had one of these since 2006 either as primary or ankle backup. Yep, Crimson Trace grips mounted and are awesome, but,so too is the luminescent front blade insert... Know how to sight by both!

JerryC wrote:
July 17, 2012

I have one and love it. .38 or. 357 it is a great little weapon and one of my favorite cc weapons.

John wrote:
July 17, 2012

Great carry gun ! I added a crimson trace laser for greater versatility . I have a inside the waistband Galco holster that is not only comfortable but keeps the gun tight to the body and invisible with a untucked shirt

Jeff in MI. wrote:
July 03, 2012

I have owned and shot one for almost 3 years now. It has become my daily carry with a DeSantis Nemesis in my strong side front pocket. What a joy it is to carry vs. my Colt Defender. Even in summer with shorts and a T-shirt, I can carry with out worry of exposing my side arm. My only complaint is the use of speed loaders requires some grip trimming and reprograming for ejecting spent cartridges and reloading fresh ammo; especially when shooting 357 magnum.

Tim in SC wrote:
June 04, 2012

I purchased this S&W M&P 340 for CCW use based on this article, and took it to the range today for the first time; what a magnificent firearm! I fired a variety of factory self-defense designed .38 and .38+P loads; all of them were dead-on accurate at typical personal self-defense distances (less than 50'), with very tight groups (using factory sights, no laser). The Federal 125gr Nyclad HP and the Hornady Critical Defense were great among the standard .38 offerings and the Speer 135gr +P GDHP SB was superb, with little to no difference in felt recoil over the standard .38's. The Speer 135gr +P GDHP SB will make a great carry cartridge. I didn't try any .357 cartridges, so can't offer any results there. I recommend you skip the lasergrip model and insist on the S&W M&P 340 model without the ugly lock on the side; your dealer can order it for you.

Old Cop wrote:
May 26, 2012

I bought the M&P 340 due to the light weight and the XS front sight. My 442 is now a spare. Practicing w/both +P and short barrel .357 is very do-able. I carry the FBI +P with one round of short barrel .357. Great carry gun, something small & light enough to always be with you. Best, Old Cop LEO (Ret.)

stefano wrote:
May 23, 2012

New member: own a 357 S&W.wood grips Got it back in 1975 works great, like brand new.never part with it.

Gary wrote:
May 20, 2012

I always get a chuckle when I hear the words "shot placement is what counts." If we were all such great shots, especially in times of great stress and under very unfavorable conditions, we would all be carrying .22s and making head shots. Realistically, we are going to hurry our shot and try to shoot first, before the bad guy shoots us. If our bullet hits an outstretched hand or arm we better be carrying enough gun so that our bullet drives through and still has enough punch to go deep. In their wisdom, the FBI went with plenty of penetration and a big hole as the preferred way for their Agents to protect themselves. So if you are a really good shot, under all conditions, feel free to take your mouse gun into battle. For the rest of us, though, go big and go deep.

Jim Denis wrote:
May 19, 2012

I keep very close to me a S&W model 49 which is very concealable, I love it. It has a little recoil but hey, I didn't get it for target practice, just taking care of business, personal protection business.

Ian wrote:
May 19, 2012

I just qualified with this revolver this yesterday morning. My S.O. allows us to qualify with up to 2 off duty guns other than our service G35 pistol. I made sure this was one of them. While I have shot 10 rounds of full house 158gr magnum loads and kept them in the coke bottle at 21 feet with pace, I could not write a manuel ticket for a day. I qualified with the 135gr Speer +P+ and it did not bother mhy hand at all. The 135gr Seer .357 SB loads seem to be just right. Drop the revovler in my shorts pocket and a speed loader in a cargo pocket and I'm good for summer. A little red nail polish around the front XS dot and real Houge grips make it perfect! Great choice for the 1st gun of the week.

Kerry wrote:
May 18, 2012

Hal & Gary, I have shot .38+P & .357 Magnums for years out of small, short barrel revolvers, and have attained "Revolver Master" recognition. I love shooting small guns and in PPC matches, have far outgunned FBI & BATF competitors, time and time again! It may be the bark of the short barrel that throws them off, but my groups are dead center! If a person truly practices with a short barrel gun, they can learn to easily outshoot a longer barrel handgun, which brings me to the next point in mind, the ammo! If one practices, he/she can kill just as easily with .38/.38+P/.357 Magnum than someone with .45, .454, or .40,'s all has to do with where you place your shots, and again, that comes with practice! This M&P 340 is a great gun to carry, AND shoot!!

tim wrote:
May 18, 2012

i won t buy any new s&w revolvers since they buckled under and put that ugly keyhole on the side plate however i own several older model s&ws and enjoy them all

Lucky wrote:
May 18, 2012

I personnally dont like short barreled guns. But if I did it would be an auto. As for this gun, scrap it.

Lucky wrote:
May 18, 2012

I personnally dont like short barreled guns. But if I did it would be an auto. As for this gun, scrap it.

Justin wrote:
May 18, 2012

Easy to carry, easy to use, and in my opinion, the .357 loads are not as horrible as other's claim. However, the amount of flash and bang may make .38sp+ a more practical self defense set up for indoors and low light. Love this gun for its intended purpose!

Hal wrote:
May 18, 2012

The 340PD is IMHO too light for full-house .357 magnum loads. The average shgooter cannot handle it in such a light gun. Additionally, cocking a DA revolver in an adrenalin-charged situation is just asking for an accidental discharge - maybe at precisely the wrong time! I have the Model 642 and believe that the .38 Special +P is more than adequate for a close encounter of the deadly kind.

Steven Smith wrote:
May 18, 2012

I love the .357! Enough punching power to stop about anything, add the 'concealability,' and the versatility (affordability) to go shooting at anytime. Just about the only drawback is the size of the grips, I'm a big fella with rather large mitts so even one-handed this firearm can be difficult to hold.

Brian wrote:
May 17, 2012

I have this with the S&W factory logo CT grips. Kills on one end, mames on the other shooting .357! Great peace of mind in an Alessi Holsters angle rig as a BUG!

ChriS wrote:
May 17, 2012

I have the S&W 642 Airweight. With regular 38 special load's it's ok, you shoot a cylinder load of +p's and it's not pleasant. I could see how much worse the 357 mag would be out of the 340. But it's a sharp looking piece, but it's not for me.

Bob Allison wrote:
May 16, 2012

You want a good self-defence load for a short barrel? Load some 2400 behind a wadcutter, with the skirt loaded forward.

MP-In-The-Wind wrote:
May 16, 2012

I have a 340PD..which I've named "Nasty". Fire full power .357 magnums thru it, and you'll know how it got it's name. That said, it's a joy to carry daily.

Gary wrote:
May 15, 2012

This is a really nice piece and at only 13.3 ounces it would be a joy to carry. But lobbing a 125-grain bullet at around 850 fps puts it more in the "Fashion Accessory" category than the "Self-Defense" category. There seems to be two schools of thought when it comes to concealed carry: buy a "Feel Good" gun that is under powered but easy to carry because you don't really think you will ever have to use it or buy a heavier weapon that is chambered for a more powerful cartridge and actually has a chance of saving your life. I mean, really, if you knew for a fact that today, after work, while walking to your car, you would be defending your life, would you leave home with the .38 or would you opt for something bigger? The FBI found the .38 +P lacking in expansion and penetration and after spending years and tons of money came up with the "perfect" round to replace it: the 10 mm. Unfortunately, for some Agents, it was too much of a good thing and got watered down to the .40 S&W. So now the 10 mm is all but gone and that's a shame. Maybe if they renamed it the .40 Magnum and factory-loaded a 180-grain bullet at 1300 fps we would have a winner. Come to think about it, why don't we have any Magnum pistol cartridges?

Dennis wrote:
May 15, 2012

I bought one of these 4 months ago. $750 was a good price. I run a lot of .38 +P fodder through it and it 's not uncomfortable.DO NOT run .357 158 grain loads unless you do not like your hands.

Dale wrote:
May 15, 2012

I have a 342 which is basically the same revolver on in .38spl. Let me tell you these are make to carry not to shoot. Even with standard .38spl loads it can hurt to shoot. I have the Speer Gold Dot 135JHP+p for a carry load and only shoot a few a year and I shoot.357, .41 & .44 magnums regularly.

May 15, 2012

I've carried my S&W 340 PD for several years now. Anytime I go to the range I go through a cylinder or two of .38sp or ..38 sp+P just because. I will say that full load .357 rounds do have a real wallop to them and 5 of them may leave your hand stinging smartly but the gun is still very manageable. I carry with .357 rounds made for short barrels. I figure that in a self defense situation the recoil sting will likely go unnoticed.

Chuck Sciulli wrote:
May 14, 2012

I happen to be in the market for another but smaller revolver to use for concealed carry. This might be one I take another look at for that purpose. I hope this is the beginning of a great weekly series.

Tony wrote:
May 14, 2012

And the suggested retail price?

Donald Ullrich wrote:
May 14, 2012

Looks like a fine piece; - but there is NOTHING that can compare ... in a silent moment of tension, - with pulling the HAMMER back inTO single action ... of a DOUBLE action revolver ~

Rick wrote:
May 14, 2012

Hurt my hand so bad when I shot it I quit before I finished the cylinder and sold it.

Denny K wrote:
May 14, 2012

I wouldn't want to shoot the 340 with 357 loads! Man! That would smart! But as a 38. It's pretty sweet..