[FIREARM REVIEW] Is the FN 5.7 Pistol That Good?

[FIREARM REVIEW] Is the FN 5.7 Pistol That Good?

The Fabrique Nationale (FN) firearms company was founded in 1889 in Herstal, Belgium and engineers and produces an extended line of quality and unique firearms for home defense, everyday carry, competition-target shooting, and tactical use. Some have not heard of it. Some refer to it as FNH, Fabrique Nationale Herstal company. One of FN’s successes is the 5.7x28mm (5.7) pistol cartridge which they developed in the1980s for first use with the P90 submachine gun. This cartridge was the first small caliber high velocity pistol cartridge and is based on the 5.56x45mm SS109 NATO round, which was also developed by FN. In 1998, they developed and introduced the 5.7 pistol for military and law enforcement use and in 2004 the 5.7 became available to the civilian market. This latter gun is the subject for this review. So in this case, the “cart-cartridge” was developed before the “horse-pistol.”

The 5.7x28mm cartridge case and bullet are reduced in size to create what some say is an improved performance to the 9x19mm. The round has a long and slim design with bottlenecked case and pointed bullet, as you can see above. It is almost 4 times longer than its diameter. This compares to the standard 9mm round which is about 1.5 times as long as wide. The 5.7x28mm round has its center of mass back towards the rear of the bullet than others. So when the 5.7 round hits the target, the bullet tends to tumble or pitch forward and yaw side-to-side, making for a much larger wound cavity. This helps the bullet’s energy transfer to the target more efficiently, with less chance of it over-penetrating out the target to whatever is behind it. CONSIDER: Larger Wound Cavity; More Energy Transfer; Less Over-Penetration; More Expansion. Several say the 5.7mm has only a third of the recoil of the 5.6mm NATO and two-thirds of the 9x19mm. The cartridge pressure level is low enough so that the pistol is blowback operated and helps reduce felt recoil. These design advantages got my attention.

Of course, this pistol is very controversial and it depends on how you define and measure “performance,” etc. While it has been criticized by gun control groups, investigation by the ATF found no commercially available ammo for the civilian market fired out of the 5.7 pistol was capable of defeating ballistic armor, as some claimed. The second generation 5.7 cartridge was developed for law enforcement and the civilian market. The “LF” (lead-free SS195LF) rounds may be used for training and law enforcement, while the sporting rounds SS197SR are for civilian use, since armor piercing ammo is prohibited in the U.S. The SS195LF is a lead-free hollow point (HP) round that has a totally lead free primer and projectile. It is intended for use on indoor ranges or where potential lead contamination is a concern.

Some say the cost of 5.7x28mm ammo is a major detriment. Think about this. The cost of the civilian-grade SS197SR rounds are about $20 per 50 rounds, while the SS195LF HP rounds are about $25 per 50 rounds. So the ammo seems closely comparable now to .45 ACP (e.g. Speer Gold Dot 230 grain HP $28 for 50 rnds) and other caliber rounds (e.g. Federal Premium .40 S&W 155 grain HP $28 for 50 rnds.) Personal preference.

The 5.7 is in service now with military and police forces in over 40 nations, including Canada, France, Spain, Greece, India, Poland, and the U.S., including the U.S. Secret Service, some Navy Seals units, and the Federal Protective Service. The internal hammer of the SAO 5.7 is NOT a striker like some claim, but is always cocked when there is a round in the chamber. There is no decocker. So, I had to try the 5.7 for myself to see if this unique gun and caliber worked for me, even though I prefer the 9mm. You can compare this review with my handgun analyses, comparisons, and rankings in the 2016 second printing of my book “Concealed Carry & Handgun Essentials.”

Several readers and students have asked what criteria I use to analyze my recommended handguns, so I want to give my criteria and range test results for the FN 5.7 to help you analyze your handguns and make the best selection for yourself. You can add or subtract from my criteria to meet your needs and preferences. I was very anxious to shoot the FN 5.7 and to compare it factor by factor to my other quality handguns to see how it compared and ranked. FN was nice enough to loan me one for testing and evaluation purposes. Know that I am not on the FN payroll, have not been paid by them for this article nor influenced to say certain things about the gun. I want to be honest and straight-forward with my opinions and ideas the way I see the pistol to sincerely help folks. Specifically, I wanted to know how accurate it is out of the box, without modifications? And what about accuracy at longer distances. Can you really feel much less recoil than a 9mm when shooting the 5.7? And the big questions– what about the trigger press? Is the trigger smooth and crisp? Is it a decent single action gun? Is it too lightweight or too large for carry? What about the reset distance for follow-up shots? Is it reliable? Are there special desirable or unique features for this particular gun? Is it ambidextrous? Can I easily reach the controls, mag release, safety, etc.? How many mags does it come with? What are its pros and cons? Are there holsters, magazines, and accessories available now for the FN 5.7? Do I recommend it and, if so, for what purpose?

What follows are two charts that list the Specifications and some Features for the FN 5.7 pistol. Then I give you my 10 criteria that I use to evaluate all guns. Finally, I present my analysis and how I specifically evaluated the gun against each of my criteria to recommend or not recommend it. As always, set your own criteria and priorities, do your own research and check my data, information, etc. with yours, for your very personal selection process.

FN Five-seveN MK II 5.7x28mm Specifications:

Model NumberFN Five-seveN MK2 Pistol
Barrel Length / Finish4.75"; Chrome-Lined; Hammer-Forged Steel
Sights / RadiusStandard 3-Dot Sights; Set On 7" Radius; Rear Fully Adjustable for Windage & Elevation; Tritium Self-Luminous Optional
Weight21 oz (empty mag); Very Lightweight
Frame / FinishLight Polymer/Black
Slide MaterialStainless Steel; Black Polymer-Coated
Trigger - ActionSingle-Action, Delayed Blowback
Trigger Press6.1 lb. Crisp
Trigger TravelShort Reset; Short .13" Takeup; No Overtravel
Magazines / Capacity3 Mags Standard - 20 Rounds Each; 10 Rounds & 30 Rounds Extended Available
Overall Length8.20"
SafetiesAmbidextrous Manual Safeties; Mag Safety
GripsCheckered Polymer; Rounded
OtherLimited Lifetime Warranty; Replace or Repair if Defective Materials or Workmanship; Rail

FN Five-seveN MK II 5.7x28mm Features:

  • Very Low Recoil from Effecient Catridge and Blowback Design; Muzzle Flip Not a Concern, Flat Trajectory for Enhanced Shooting to 50 yards
  • Pivoting Internal Hammer Totally Enclosed within Frame; Rounded Edges and No Snag
  • Enhanced and Soft Single-Action Trigger – Smooth, Crisp and Clean Break; Short Reset
  • Very Lightweight but Solid Polymer
  • Loaded Chamber Indicator on Top Left of Slide; Tacticle and Visible
  • High Capacity Mags – 20 and 30 Rounds
  • Comfortable and Checkered GRip Andle (like FNBrowning Hi-Power)
  • Do Not Need to Press Trigger to Field Strip
  • Smooth Operating Controls – Easy to Rack Slide and Load Mag into well and Mag Drops Free
  • Ambidextrous Manual Safety Located Above Trigger Guard – Easy Operation by Trigger Finger

I wondered if there was enough supply of this 5.7 ammo available at reasonable cost and available mags and accessories? To my surprise, yes to all questions. I found this newly-designed leather and kydex hybrid holster for the FN 5.7 pistol. It fit perfectly, looks good, and is manufactured by Clinger Holsters (contact information below.)

FN 5.7 Pistol Leather-Hybrid Holster by Clinger Holsters
FN 5.7 Pistol Leather-Hybrid Holster by Clinger Holsters

Criteria and Considerations for the FN Five-seveN MK II 5.7x28mm Review

Here are just 10 of my Criteria and factors I use for evaluating any handgun, so I will use them for the FN 5.7 full size. In addition to my criteria, there are other subjective features that may be appealing for some, like a certain style, mag release location, action, caliber, appearance, number of mags included, type of sights/modifications, bore axis, rail, grip angle, non-porting or porting, included extras like a holster and pouch, customer service, etc. So, I combined these into my last Miscellaneous criterion. I must admit that ALL gun-choice decisions involve tradeoffs, but I really want ALL of my criteria to be met. I assigned a total possible point score of 10 points for each of my 10 criteria for a total possible score of 100 points. You can certainly add your own additional criteria and preferences or subtract any of mine.

FN 5.7 has a Very Wide Trigger Face & Large Mag Release Lever for Ease of Use
FN 5.7 has a Very Wide Trigger Face & Large Mag Release Lever for Ease of Use

Recognize that there are several features, characteristics, pros and cons, and personal criteria to include and consider and you make your own tradeoffs according to your priorities, preferences, defined needs, and use.

FN 5.7's Manual Safety is Ambidextrous and located Above Trigger Guard for Ease of Use with Trigger Finger 
FN 5.7’s Manual Safety is Ambidextrous and located Above Trigger Guard for Ease of Use with Trigger Finger

FN 5.7 Pistol 5.7x28mm Range Test

I was anxious to shoot this pistol and bought some American Eagle 5.7x28mm 40-grain ammo, AE5728A. The ammo was quickly and readily available, so I paid $25 for 50 rounds. OK, but not great, so shop around for better ammo prices. I went through this supply very quickly and had to shoot more to adequately test and evaluate it. Some was donated and I appreciate Federal Premium. It was very fun shooting this gun and I was amazed at its accuracy and very soft recoil for such a lightweight gun. I wanted to shoot at least 250 rounds, but it was going to be expensive. Usually I shoot 500 rounds over a couple of days to decide if I want to use the gun and how to use it best. Below are my evaluations for each of my 10 criteria for the FN 5.7 for my home defense and range shooting purposes. I also was considering if this could be a carry gun, but after holding it and shooting it some, I knew it was just too large for concealed carry for me. I know some do carry it, however. I wanted to put the gun through its paces and check it thoroughly for malfunctions, stoppages, accuracy, and reliability. Thanks to FNH and Federal Premium Ammo for providing some rounds of V-Max and Speer 5.7 ammo for my testing and evaluation of the pistol.

This FN 5.7 pistol performed excellently. No malfunctions nor stoppages of any kind and I loved the 20-round capacity mags. It digested the different types of ammo without any problems. I was honestly amazed at the very low recoil; much less than even my 9mms and about like my .22 mag rounds. It was easy and smooth as butter when I racked the slide and it was so easy to insert and release the mag from the mag well. Some of my arthritic and low-hand strength students will really like to rack and shoot it. While its appearance is not the greatest, its performance more than made up for its lack of beauty. Although polymer, it just felt solid in my hands, while being very lightweight. The FN 5.7’s ergonomics were fine for me. Some complain about the placement of the ambi manual safeties above the trigger guard, but I really like that. It was very easy for me to use my trigger finger (already indexed straight on the frame right next to the safety) to engage and disengage the manual safety quickly. A training issue, so practice this if you get this gun. It was comfortable in my hand and the moderately-aggressive grip texture was just right for me. The grip is thin enough, but longer and sightly wider to accommodate the 20 rounds in the mag, but for my medium-sized hands there was no problem. In fact, the grip felt just right and comfortable to me. No need for an extended mag. Again, I want to emphasize the nice soft recoil and very low muzzle rise of this gun. A great feature and benefit to enhance accuracy. Below I will get specific and present my ideas for each of my criteria after my range testing.

After my range live fire, the FN 5.7 single action pistol impressed me as an accurate, lightweight, soft recoil, high capacity, easy to rack gun with a great trigger press and short reset. It was really fun to shoot the FN 5.7. Seems folks avoid this gun without giving it a thorough review and trial, probably because of the unique rounds it fires and their lack of understanding of the gun’s attributes.

My First Box of 50 Hits on the Target at 10 Yards 
My First Box of 50 Hits on the Target at 10 Yards

Over different distances, especially distances of 10 to 25 yards, accuracy was very acceptable, but shoot it for yourself to make your own decisions, based on your abilities and proficiency… and budget.

Range Test Results for each of my 10 Criteria:

1. Accuracy and Reliability – Score: 10

The Accuracy of the FN 5.7 was very acceptable for me at distances from 5 yards to 25 yards. I impressed myself, as an aging old codger, but the gun did the work. At first, I found I had to adjust the rear sights for only elevation, as it was shooting out of the box about 4 inches low. After fine tuning it, it was right on and hits were very good. The 6.1# trigger press of this single action gun and its crisp, soft trigger with a short reset helped my accuracy. Some have said they noticed much improvement in the trigger and accuracy of their gun after about 1,000 rounds fired, getting closer to a 4.5 pound press. I shot 250 rounds to test and evaluate the FN 5.7 pistol. I used my Modified-Isosceles Stance, a two-handed grip, & shot SS197SR V-Max blue-tip 40-grain rounds (ave. muzzle velocity=1700 fps) and American Eagle AE5728A 40-grain TMJ at 1650 fps ave. muzzle velocity.

FN 5.7 Pistol with 40 Grain FNH USA Hornady V-Max Blue Tip & American Eagle AE5728A Ammo 
FN 5.7 Pistol with 40 Grain FNH USA Hornady V-Max Blue Tip & American Eagle AE5728A Ammo

2. Trigger Press – Score: 9

The Trigger Press averaged about 6.1 pounds with 10 readings from my Lyman Electronic Trigger Pull Gauge. This was right at the upper limits for my press range for my carry guns, but acceptable for my other uses. It will improve after break-in and shooting it more. I prefer that my carry guns have a max. of 6.5 pounds press or less, so this is very close and no problem. But, this gun will probably not be in my carry rotation. Of course, this is personal preference and training related, but I know some of my recommended and actual 9mm 1911-style single-action carry guns have lighter presses. I analyze and compare 21 of my top 21 guns in my recent book. I liked that the trigger press was crisp and easily identifiable.

3. Trigger – Score: 10

The Trigger had a tactile and very identifiable click and short reset. I liked the short and positive reset and very crisp trigger. My shots were consistent each time and I could easily recognize the reset point. I really enjoyed shooting it, but wish the price of ammo would be less. An excellent soft and smooth SAO trigger.

4. Barrel Length: Score: 10

The 4.75-inch chrome-lined Barrel combined with its lightweight, delayed blowback operation, and single-action to give a surprisingly low muzzle flip and recoil. Very manageable for a large majority of folks. The hammer-forged steel barrel was of high quality and coated with polymer.

5. Sights – Score: 8

The 3 dot sights were small to medium-sized, distinguishable, and set on a 7″ radius. They are also available in tritium night sights as an extra option. The rear sight is fully adjustable for windage and elevation. Out of the box, the sights were off about 4″ low, but I adjusted it and then no problems for the short term. The sights were certainly acceptable, but with my impaired vision and color blind eyes, I prefer the bright green fiber optic front sight for a better lock on to the front sight and definitely wanted larger sight dots, especially for long-distance shooting.

6. Proper Gun Weight – Score: 9

The overall 21 ounce unloaded weight was very light and even the light loaded weight surprised me with its minimal influence on accuracy and handling. Recoil was less, not more, with the light polymer gun. Mostly due to the lightweight caliber ammo and gun design. The weight is certainly very acceptable.

7. Caliber – Score: 10

7. It was easy and comfortable to shoot the 5.7x28mm Caliber. The 5.7 pistol has a delayed blowback design matched to the ammo. Felt recoil was much lower than I expected and the recoil was very easy for me to control. It digested the two types of  ammo easily without a single malfunction or stoppage. The lightweight  made it comfortable for handling and the recoil was not a problem.  Ammo experts tell me (not my expertise) that the tip of the 5.7x28mm rounds have a steel penetrator and aluminum core that is heavier than the forward tip, causing the bullets to tumble and yaw in soft tissue after 2 inches of penetration, creating a large wound cavity and virtually eliminating the risk of overpenetration and subsequent unintended injuries. This is an important advantage.

8. Capacity – Score: 10

Outstanding Capacity. There were 3 20-round magazines included and this was convenient for range practice and is also helpful for personal protection. Lightweight polymer 10-round and 30-round mags are currently available. SAFETY FIRST ALWAYS!

9. Ergonomics – Score: 9

The Ergonomics of the FN 5.7 were very nice. Aside from its detracting appearance, form, function, and fit were excellent. The contemporary grip texturing was just right for me & easy to handle with my sweaty palms. The grip’s body was ample to allow me to acquire a firm & comfortable grip with my medium-sized hands. I was able to easily reach all the controls. I could not get an improper grip. There are 2 small “wings” by the rear cocking serrations to help with racking & chamber check. Love the smooth lines and safety above the trigger guard.

10. Miscellaneous – Score: 8

FN 5.7 in Hard Case with 3 Magazines, Lock, Manual, and Wrench
FN 5.7 in Hard Case with 3 Magazines, Lock, Manual, and Wrench

As always before shooting any new gun, I disassembled, lubed and cleaned, and re-assembled the FN 5.7 before I shot it. I did NOT have to press the trigger to disassemble it and it was very easy and quick to do. There was an internal firing pin safety, mag safety, as well as the ambidextrous manual safeties. I liked the placement of the manual safeties above the trigger guard. The gun can be bought for near $1,000, if you shop. There is a Limited Lifetime Warranty

Total Points = 93 out of 100 Possible.

I certainly RECOMMEND this handgun for consideration for your range plinking fun and for personal protection in the home or a possible carry alternative, depending on your needs, etc. 


The FN 5.7 pistol is more than a unique conversation gun with a “cool” fun factor and its fine attributes can be used to help your personal protection in my opinion. Once you understand the history and technical specifications of the various 5.7x28mm rounds, you can better appreciate the caliber, its efficiency and effectiveness, and the related fine pistol that uses the ammo. The accuracy, low recoil, lightweight, high capacity, and minimal 10.5-11.5″ penetration to avoid collateral injuries benefits outweigh the gun’s purchase price and present moderately-priced ammo cost, given the comparative options.  The benefits of potential life or death protection outweigh the costs in my opinion. With so much going for it, and little downside, I think it deserves a more thorough review, testing, and evaluation by most folks for not only fun plinking, but for personal protection. These are just my opinions and ideas, so handle and shoot it for yourself. I hope this review of the FN Five seveN, single action pistol has helped you gain some information you did not previously have. Consider that these are just my opinions with limited live-range fire and shooting myself only 250 rounds of ammo, some at my expense. You need to determine for yourself its reliability and accuracy by your own shooting and handling of the gun. Like always, I recommend that you shoot any handgun yourself before you purchase it. Decide on your criteria, how you will primarily use the gun, and what features are important to you and you are willing to pay for ahead of your range time. Then critically evaluate the gun YOURSELF per your criteria and purpose, with standard drills (several mentioned in my book), with various ammo types, over an extended break-in period of about 500 rounds. Remember, Safety First Always. 

Continued success!


FN America
McLean, VA 22102

Clinger Holsters
American Concealment Solutions, LLC
Van Buren, AR 72956

FNH & Federal Premium Ammo
Anoka, MN 55303

Photos by Author.

* This personal opinion article is meant for general information & educational purposes only and the author strongly recommends that you seek counsel from an attorney for legal advice and your own personal certified weapons trainer for proper guidance about shooting & using YOUR firearms, self-defense and concealed carry. It should not be relied upon as accurate for all shooters & the author assumes no responsibility for anyone’s use of the information and shall not be liable for any improper or incorrect use of the information or any damages or injuries incurred whatsoever.

© 2016 Col Benjamin Findley. All Rights Reserved. This article may not be reprinted or reproduced in whole or in part by mechanical means, photocopying, electronic reproduction, scanning, or any other means without prior written permission. For copyright information, contact Col Ben Findley at [email protected].

Accuracy and Reliability
Trigger Press
Barrel Length
Proper Gun Weight
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"Col Ben" is retired with 30 years service in the U.S. Air Force, with joint services Special Ops duty and training, and is Air Force qualified as "Expert" in small arms. He is a Vietnam-era Veteran. Ben is an experienced NRA-Certified Pistol Instructor, NRA Range Safety Officer, and FL Concealed Carry License Instructor. Ben recently wrote the book "Concealed Carry and Handgun Essentials for Personal Protection" (second printing) with 57 comprehensive Chapters about concealed carry and handgun principles, techniques, and tips for both experienced and new shooters. His reference book is endorsed by several organizations and is available on his website at FloridaHandgunsTraining.com. Contact him at [email protected].