2nd Swing Golf
Master fitters, Trackman-heavy testing
“You hit better than I think many irons that we've ever tested.”
A hollow-body iron that looks like a blade and explodes off the face; the fitter hit it better than almost any iron they've tested, with 1.42 average smash, tight dispersion, and a 50-degree landing angle.
+ the facts · 6 pros · 2 cons− the facts
- +Looks like a compact blade yet delivers fast ball speeds, 1.42-1.44 smash factors
- +Tight dispersion and consistent 179-yard 7-iron carries in testing
- +50-degree landing angle with excellent peak height
- −Slightly thicker top line than a true blade
- −Stronger lofts (29-degree 7 iron) factor into the distance
For: Almost any handicap wanting a players iron with distance, or as the forgiving top half of a combo set
Alex Etches
Custom fitter, gear deep-dives
“The new Mizuno Pro M15, probably the best iron of 2026.”
He is gobsmacked: a bladey-looking iron with vomit-inducingly good dispersion and matching peak heights on mishits that he crowns probably the best iron of 2026, preferring it even over the M13.
+ the facts · 5 pros · 2 cons− the facts
- +Outrageous dispersion; well-struck and mishit shots produced the same or similar peak height
- +Blade-like looks in a forgiving hollow-body package, one of the prettiest forgiving irons
- +High launch with easy height and distance
- −Noticeably less spin than the M13 (toe-struck 7 irons dipping into the 4,000s)
- −Going to cost a fair bit
For: Golfers who want a blade look with height, distance and real forgiveness
James Robinson Golf
Mid-handicap everyman reviews
“With a good fitting, these could well be the best hollow-bodied irons of 2026”
The sleekest Mizuno he's seen since the MP-32: a stunning hollow-body with real distance (200-yard 5 iron), quintessential Mizuno feel, and mishit forgiveness that sold him on the 7 and 9 irons, though they're very expensive and spin runs low.
+ the facts · 4 pros · 2 cons− the facts
- +Outstanding looks; sleekest Mizuno design since the MP-32
- +Quintessential Mizuno feel and sound from grain flow forged HD chromoly
- +Real distance: ~200-yard 5 iron, strong carries even on bad strikes
- −Quite expensive
- −Low spin through the 5 and 7 irons compared to rivals, with hot run-outs (7 iron running to 190)
For: Mizuno fans who want a hollow-body players distance iron to rival the P790 crowd
Michael Newton Golf
On-course, season-long club tests
“I'm so impressed with that M15 with the sound and the feel.”
The 245 replacement and the most forgiving of the players range, with a hollow construction that sounds far better than it has any right to.
+ the facts · 6 pros · 3 cons− the facts
- +Doesn't sound hollow at all, big improvement in sound and feel over the 245 via Harmonic Impact tech
- +Progressive build: 51g tungsten deep in the 4 to 7 irons, less in the 8, partial hollow 1025E scoring irons
- +Compact blade length for a hollow iron, forgiveness hidden under the bonnet
- −Thicker top line than M13
- −Stronger 29 degree 7 iron loft means spin runs on the low side
- −Feel is not as soft and is more explosive than M13
For: Players who want a forgiving hollow-body iron without giving up players-category looks and feel.
Today's Golfer
UK magazine, robot + human testing
“one of the best looking players distances I've ever seen”
The longest iron on test, tied for top carry, with steep descent angles and stunning looks despite a strong 29-degree loft.
+ the facts · 4 pros · 1 cons− the facts
- +Longest carry on test (190.8 mph ball speed context)
- +Steep 46.7-degree descent angle holds greens
- +Best-looking players distance iron the tester has seen
- −M15 badge placement looks slightly busy
For: Better ball strikers wanting distance in a compact, workable head, or a long-iron combo
MyGolfSpy
Data-driven independent testing
“I can get a lot, if not all that performance, back”
Named as the personal fallback from the defective M13s, comboed with S3s, on the belief it recovers most or all of the same performance.
+ the facts · 2 pros− the facts
- +Combos cleanly with the S3 for a set that recovers M13-level performance
- +The route he's personally taking after the M13 face issue
For: M13 owners looking for a replacement set without waiting on repaired heads
