FN Reflex Review (2026): 900 Rounds With FN’s Hammer-Fired Micro 9mm

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Table of Contents

Review: FN Reflex, the Micro 9mm With a Hammer Inside

Our Rating: 8.5/10

• MSRP: $614 (Reflex), $676 (Reflex MRD), $719 (Reflex XL MRD)
• Street Price: Sportsman’s Warehouse had the Reflex at $499.99 and the Reflex MRD at $569.99 when I checked (Use our live pricing for the best up to date deal)
• Caliber: 9mm
• Action: Internal hammer, single action only
• Capacity: 11+1 and 15+1 (10-round versions available)
• Barrel Length: 3.3 in., cold hammer forged, 1:10 twist
• Overall Length: 6.2 in.
• Height: 4.27 in.
• Width: 1 in.
• Weight: 18.4 oz, per FN
• Trigger Pull: 4.5 to 5.5 lb, per FN
• Sights: 3-dot with a tritium front insert in an orange ring
• Optics: MRD models take Shield RMSc and Holosun 507K footprint dots
• Safety: No manual safety (NMS) or ambidextrous manual safety (MS) models

Quick Take

Most micro 9mms are striker guns. The FN Reflex isn’t. It uses an internal hammer and a single-action-only trigger, and the result is a pull that takes up smoothly, hits a clean wall and breaks at about 5 lb. Around that trigger, FN built a 1-inch-wide, 18.4 oz pistol that ships with an 11-round and a 15-round magazine, and the MRD version takes a red dot without an adapter plate.

I put 900 rounds through a black Reflex MRD with a Holosun 507K over five range trips. It had one stoppage, with cheap range ammo, and it grouped 1.8 inches at 15 yards with Gold Dot and the dot. Racking it is also easier than on most guns this size, which FN credits to the hammer design.

The short answer: if you want a P365-size carry gun with a better trigger, the Reflex is the one to try first. Just mount your optic with FN’s screws, not the ones in the optic box, for reasons I’ll cover below.

Best For: Concealed carriers who want a micro 9mm with a real single-action trigger, and shooters who find striker micro-compacts hard to rack.

Design Intent: A Hammer-Fired Micro Compact

FN launched the Reflex and Reflex MRD on April 11, 2023, and aimed it straight at the micro 9mm crowd. Its pitch was simple: keep the size and capacity of the popular micros, and fix the trigger. The internal hammer is how FN did it. A hammer-fired single-action pull doesn’t have to partly cock a striker as you press it, so the take-up is light and the break is consistent.

FN says the same design lowers slide racking force, and you can feel it. It also lets you take the gun apart without pulling the trigger, which is a real safety improvement over striker guns, such as the Glock and Shield, that make you dry-fire before field stripping. Multiple internal safeties sit in the fire control, and FN sells both no-manual-safety (NMS) and manual-safety (MS) versions, with the MS lever on both sides.

Look at the carry details. The slide is 1 inch wide, the barrel is cold hammer forged and target crowned, the magazine release is reversible, and the slimline rail takes the Glock 43X/48 rail versions of lights like the SureFire XSC and Streamlight TLR-7 Sub. The front sight has a tritium insert inside an orange ring, which is easy to find in daylight too.

FN Reflex MRD Service Bulletin: Mounting a Red Dot

Every MRD owner should read this before mounting a dot. FN issued a service bulletin after finding that, in very limited cases, using the wrong screws to mount specific optics could cause binding, cycling problems or interference with the firing pin safety block. The first case was a Reflex MRD with a Viridian RFX11 mounted with FN’s screws labeled “604”, which were too long. The correct screws were the ones labeled “603”.

• Use only FN’s screws: FN says not to use the screws that come with your optic. Check the chart in the Reflex owner’s manual for which FN screw fits your dot.
• Check the length first: Put the screws through the optic before mounting it. FN says no more than 0.045 inches, or 3 threads, should stick out of the bottom.
• Torque to FN’s number: 6 to 8 in-lb, regardless of what the optic maker recommends. Don’t overtighten.
• If your optic isn’t in the chart: Call FN Customer Service at 1-800-635-1321 before you mount it.

I mounted my Holosun 507K with the FN screws the chart called for, counted the threads, and torqued them to 7 in-lb. The dot held zero and the gun ran normally for all 900 rounds. FN’s full details are in its Reflex MRD service bulletin. For choosing a dot, see our best red dot for concealed carry guide.

FN Reflex Variants: Reflex, MRD and XL

Every Reflex is a 9mm with the same internal hammer and single-action trigger. The differences are the optic cut and the size.

The MRD is the version I tested and the one I would buy. Palmetto State Armory and Sportsman’s Warehouse both had it at $569.99 when I checked.

FN added the Reflex XL MRD on January 14, 2025. It has a 3.8 inch barrel, a longer grip that holds 15 rounds standard with an 18-round extended magazine, two interchangeable backstraps, a bigger beavertail and a rail FN says fits accessories made for the Glock 43X MOS. At 6.75 inches long and 20 oz it’s still small. The XL comes only without a manual safety, in black, FDE, or a silver slide over a black frame. FN says many parts, magazines and accessories work across the Reflex line.

Sportsman’s Warehouse had the XL MRD at $599.99, the lowest I found at a major retailer.

The Reflex XL MRD adds a longer grip and barrel. Photo: FN America.

FN Reflex vs SIG P365X, Glock 43X and Shield Plus

FN Reflex vs SIG P365X

The P365X is the gun the Reflex is chasing. SIG’s version is striker-fired, with a 3.1 inch barrel, 12-round magazines and an optic-ready slide, and it has the biggest holster and accessory market of any micro. The Reflex has the better trigger and ships with a 15-rounder in the box. Palmetto State Armory had the P365X at $600.99, the best major-retailer price I saw. See our SIG P365 review for the whole family.

FN Reflex vs Glock 43X

Glock’s slimline 43X is the simple, proven choice. It’s a striker gun with a 3.41 inch barrel and 10-round factory magazines, and it costs less. With factory magazines, it holds fewer rounds than the Reflex, and its trigger is a Glock trigger. Sportsman’s Warehouse and Palmetto State Armory both had it at $448. Our Glock 43X review covers it.

FN Reflex vs Smith & Wesson Shield Plus

The budget pick in this group. Smith & Wesson’s Shield Plus is a striker-fired micro with a 3.1 inch barrel and 10 and 13 round magazines, and it’s the cheapest of the four. Its trigger is decent but not in the Reflex’s class. Guns.com had it at $392.99. Our Shield Plus review has the details.

Verdict: The Reflex has the best trigger of the four and competitive capacity. The P365X wins on accessories, the 43X on simplicity and the Shield Plus on price. For more choices, see our best high capacity micro compact guide.

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Testing Protocol

My test gun was a black Reflex MRD without a manual safety, with a Holosun 507K mounted using FN’s screws. I shot it over five range trips in August and September, with temperatures from 70 to 94 degrees, using the factory 11-round and 15-round magazines plus one extra 15-rounder.

Ammunition Log

• Federal American Eagle 115 gr FMJ: 400 rounds
• Winchester USA 115 gr FMJ: 200 rounds
• Speer Gold Dot 124 gr +P: 100 rounds
• Federal HST 147 gr: 100 rounds
• Hornady Critical Defense 115 gr FTX: 100 rounds

Phase 1: Break-In

The first 200 rounds were American Eagle from 7 and 10 yards, mostly zeroing the dot and getting used to the trigger. For the first box, the slide was a little stiff. Every round fed, fired and ejected.

Phase 2: Reliability

Rounds 201 to 900 mixed all five loads, with fast strings, one-handed shooting and reloads from all three magazines. I logged one stoppage: a failure to feed at round 612 with Winchester USA from a full 15-round magazine. A tap and rack cleared it, and it didn’t repeat. Every defensive round fed and fired.

Phase 3: Accuracy

I shot five-shot groups off a rest with the red dot at 15 yards, five groups per load. Speer Gold Dot averaged 1.8 inches, Federal HST 2.0 inches, Critical Defense 2.2 inches and American Eagle 2.4 inches. The trigger broke at about 5 lb on my gauge, right in the middle of FN’s 4.5 to 5.5 lb spec, with a short, clear reset.

Tracking & Observations

After 900 rounds and one cleaning at round 500, the finish showed light wear at the muzzle and on the slide stop. The optic screws were still at torque when I checked them after the last session. My hand came away red from the grip texture after long strings, and it rubbed through a thin T-shirt during a day of carry.

What This Means for You

• Upgrade Impact: A dot on an MRD model is the only upgrade worth making.
• Reliability: One stoppage in 900 rounds, none with defensive ammo.
• Ammo Preference: Gold Dot 124 gr +P grouped best.
• Maintenance: Recheck optic screw torque after the first few hundred rounds.
• Accuracy Expectation: About 2 inches at 15 yards with a dot.

Performance Testing Results

Reliability (9/10)

The only hiccup was a Winchester failure to feed at round 612 from a topped-off 15-rounder. My 11-round magazine never missed, and neither did any defensive load.

Accuracy (9/10)

A 1.8 inch average with Gold Dot at 15 yards is better than I shoot most micro 9mms. Credit goes to the trigger. There’s no stacking at the end of the pull, so the dot stays still as the shot breaks.

Ergonomics & Recoil (9/10)

The low bore axis and aggressive texture keep the gun from rolling in your hand, and follow-up shots come back fast. Racking it takes noticeably less effort than a P365X or Shield Plus. With the 15-round magazine, even a big hand gets all its fingers on the grip.

Fit, Finish, and Quality Control (8/10)

Slide-to-frame fit is tight and the finish held up well. My only complaint is the grip texture. It’s great for control and hard on skin when you carry it inside the waistband.

Technical Deep Dive

Component	Specification (FN)	Why it matters
Fire control	Internal hammer, single action only, 4.5 to 5.5 lb	Smooth take-up, clean break
Barrel	3.3 in. cold hammer forged, target crown, 1:10 twist	Accuracy and long life
Slide	1 in. wide, front and rear cuts, MRD optic cut	Easy to rack, takes a dot directly
Sights	3-dot, tritium front with orange ring	Visible day and night
Frame	Slimline rail, reversible magazine release	Fits micro lights, either hand
Safeties	Multiple internal safeties; ambidextrous manual safety on MS models	Choose with or without a lever
Magazines	11 and 15 round (10 round versions)	Up to 15+1 in a micro

Parts, Accessories and Upgrades

Upgrade Category	Recommended Component	Why It Matters	Cost Estimate
Red dot	An RMSc or 507K footprint micro dot	Mounts directly on MRD slides	$200 to $400
Holster	FN’s Reflex IWB holster or a Reflex-cut kydex holster	Proper retention and trigger coverage	$50 to $100
Weapon light	SureFire XSC or Streamlight TLR-7 Sub, Glock 43X/48 rail version	Named by FN as compatible	$150 to $300
Magazines	Extra FN 15-round magazines	Spare and carry backup	Check FN’s store

For carry ammo, our best 9mm ammo guide covers the defensive loads that work in short barrels, and our appendix carry guide helps with holster placement.

FN Reflex Problems & Solutions

• Wrong optic screws: Use only FN’s screws, check that no more than 3 threads show, and torque to 6 to 8 in-lb, per FN’s service bulletin.
• Harsh grip texture: Wear an undershirt, or use a holster with a sweat guard.
• Holster selection: Fewer makers cut for the Reflex than for the P365 or 43X. Check fit before you buy.
• Feeding from a full 15-round magazine: My only stoppage came from a topped-off 15-rounder with bulk FMJ. Test your carry magazine with your carry ammo.

Who Should NOT Buy This Gun

• Buyers who want the most holsters and parts: The SIG P365X has the biggest aftermarket in this class.
• Buyers on a tight budget: The Smith & Wesson Shield Plus costs about $100 less.
• Glock shooters who want the same manual of arms: The Glock 43X keeps everything familiar.
• Shooters who want a bigger grip and more rounds: The FN Reflex XL MRD adds a longer grip and an 18-round magazine.

Final Verdict: Is the FN Reflex Worth It?

Yes, if the trigger matters to you. The FN Reflex gives you a micro 9mm with a smooth single-action pull, an easy slide and 15+1 in the box. Mine ran 900 rounds with one stoppage and grouped 1.8 inches at 15 yards with Gold Dot. Mount your optic by FN’s rules and it’s easy to carry and easy to shoot well.

If you already own a P365 holster collection, switching costs money, and the XL is the better buy if you can carry a slightly bigger grip. For more carry options, see our best concealed carry handguns guide, and if you like FN, our FN 509 review covers its bigger sibling.

Specs and prices in this review come from FN America’s FN Reflex, Reflex MRD and Reflex XL MRD pages, its launch press releases and its MRD service bulletin. Street prices are what we saw on September 25, 2026.

Final Score: 8.5/10. A micro 9mm with a single-action trigger that makes 15-yard groups easy, as long as you mount the optic the FN way.

FAQ: FN Reflex