Sometimes, you get what you pay for.
I got 12 of 13 rnds into the magazine for my M&P45 and those cycled fine with the spring catching the slide open when the magazine was empty, but the fit between the handle and the new magazine was not as flush as I would prefer. For < $14 when the S&W 10 rnd magazine is running $37 and the S&W 14 rnd is at $44, I can't regret it, but I don't see doing it again. If I could get a flush-fitting 10 rnd for the same price, I might try for it.
Year after year, ProMag has increasingly become one of the leading manufacturers of firearms magazines in the world. Gun enthusiasts and law enforcement personnel have agreed, be it for recreational "plinking", competition shooting, or law enforcement, Promag is the source you can count on.
This is a ProMag 13 round magazine for the Smith & Wesson M&P45 .45 ACP pistol. This magazine is constructed from blued-steel that has been heat-treated. These magazines were designed for professional shooters and law enforcement personnel whose lives depend on a perfect shot every time. Expertly machined for exceptional quality and guaranteed to feed and function for every shot. ProMag magazines include a lifetime guarantee, if you ever have a problem with their magazines; simply return them to ProMag for replacement. When you need a cost effective aftermarket replacement mag that you know you can count on, you need a ProMag!
Features and Specifications:
Manufacturer Number: SMI-A16
ProMag S&W M&P45 .45 ACP Magazine 13 Rounds Blued Steel
Caliber: .45 ACP
Capacity: 13 Rounds
Body Material: Heat Treated Steel
Spring Material: Heat Treated Chrome-silicon Wire
Follower Material: Polymer
Follower Color: Black
DuPont Zytel Polymer Follower, Lock Plate, and Base Plate
Finish: Blued
Fits:
Smith & Wesson M&P 45
This is a ProMag 13 round magazine for the Smith & Wesson M&P45 .45 ACP pistol. This magazine is constructed from blued-steel that has been heat-treated. These magazines were designed for professional shooters and law enforcement personnel whose lives depend on a perfect shot every time. Expertly machined for exceptional quality and guaranteed to feed and function for every shot. ProMag magazines include a lifetime guarantee, if you ever have a problem with their magazines; simply return them to ProMag for replacement. When you need a cost effective aftermarket replacement mag that you know you can count on, you need a ProMag!
Features and Specifications:
Manufacturer Number: SMI-A16
ProMag S&W M&P45 .45 ACP Magazine 13 Rounds Blued Steel
Caliber: .45 ACP
Capacity: 13 Rounds
Body Material: Heat Treated Steel
Spring Material: Heat Treated Chrome-silicon Wire
Follower Material: Polymer
Follower Color: Black
DuPont Zytel Polymer Follower, Lock Plate, and Base Plate
Finish: Blued
Fits:
Smith & Wesson M&P 45
Not bad for a functional 12 rnd mag at that cost, but not a flush-fit.
May 23, 2026
Save your money for the SW branded mags
These magazines are very low quality.
the 13th round does not load in two of the three mags i bought.
none of the magazines feed reliably. I put a few hundred rounds through these mags and the only value i can see is using them to induce weapons malfunctions into shooting drills.
Save your money for the SW branded mags
the 13th round does not load in two of the three mags i bought.
none of the magazines feed reliably. I put a few hundred rounds through these mags and the only value i can see is using them to induce weapons malfunctions into shooting drills.
Save your money for the SW branded mags
April 26, 2025
This magazine is amazing
February 21, 2024
Worth the money! Great performance!
Bought 3 magazines. All three worked great. No problems. Will be ordering more.
February 18, 2024
Yes it's perfect no problem at all
February 19, 2023
Did not fit in a Stern Defense 45acp S/W Ar15 adapter but a factory S/W magazine dropped in, I had to sand down all 4 corners and front & back for it to go in. Factory magazine same type as pro mag
February 4, 2023
The only thing I don't care for is the large gap between the extended mag and the bottom of the gun. Even my butt extender doesn't cover it like my S&W one does.
February 7, 2022
Do NOT buy!
These mags are the worst I've come across. My first trip to the range they failed to load once every two rounds. I figured they needed more time and my second trip to the range they were just as bad. Please stick with the S&W mags...the price is worth it. You would be better off manually loading one round at a time into the chamber than use these.
June 14, 2020
Absolute garbage.
Mags FTF FTE and prevent my firearm from going into battery.... Come on, ProMag... Pros: None.. Cons: Failure to eject
June 12, 2020
These magazines are very difficult to load.
I use thes in my S&W 45. Fitment is excellent. Hard to force bullets into. Hopefully they get easier with more use.
May 3, 2020
Will this fit my Stern Defense AR-15 mag well adapter?? If not does anyone have specific recommendations please??
Answer:
Hello Christopher! Do you have Stern Defense product no. MAG-ADMP45, which is designed to accept S&W M&P .45 ACP magazines? If so, then your AR-15 ought to accept this S&W M&P45 magazine. Here are all the S&W M&P45 magazines we currently have in stock: https://www.cheaperthandirt.com/parts-and-accessories/magazines/smith-and-wesson/mandp-handgun/45-acp-magazines
Will this magazine fit a kahr .45
Answer:
No sir, it will not.
Will this fit 1911 45 auto's
Answer:
Hi Charles! The manufacturer only specifies it for Smith & Wesson M&P45 .45 S&W series pistols. There's zero chance of it working in a 1911. Check out our big selection of full-size .45 ACP 1911 mags instead! https://www.cheaperthandirt.com/parts-and-accessories/magazines/1911/45-acp-fullsize
Will this fit the Shield 45acp
Answer:
No sir. Here are all the Shield .45 ACP mags we currently have in stock: https://www.cheaperthandirt.com/parts-and-accessories/magazines/smith-and-wesson/mandp-shield?caliber=58
Will this fit a Smith & Wesson, Shield, 45 ACP, 3.3" Barrel?
Answer:
No this will not fit. Try item # MAG-428-446 or MAG-17-109.
Does this fit MP 45 shield m 2.0 ?
Answer:
No it does not. You will need a magazine that specifically states M&P45 Shield in the written description.
Will this mag fit my S&W 45 M 2.0 compact?
Answer:
This will fit a S&W M&P 45 2.0 Compact, however, the slip-on grip sleeve may need to be removed.
Will this mag fit a .45 shield m&p 2.0?
Answer:
No this will not fit. Try item # 2-MGPMSMI-37 or MAG-428-445 or MAG-17-109.
will this fit in.the m&p shield 45?
Answer:
No it will not.
Is it compatible with the Stern Defense conversion kit?
Answer:
Stern Defense makes more than one magazine adapter kit. If you have the adapter designed to fit S&W M&P 45acp magazines, then yes this will fit.