Smith & Wesson 14646 9mm Luger 23+1
About this product
What is the Smith & Wesson 14646 9mm Luger 23+1? It's a full-size, optics-ready striker-fired pistol built on Smith & Wesson's M&P9 M2.0 metal frame with a threaded 4.80-inch barrel and OD Green Cerakote finish. This configuration ships with two 23-round magazines and four interchangeable grip inserts, making it one of the most feature-complete factory offerings in its class. The combination of high capacity, modern mounting system, and suppressor-ready barrel positions it as a serious option for both duty use and tactical applications.
What is the Smith & Wesson 14646 used for?
This pistol is designed for high-volume range sessions, competition use, and as a duty sidearm where capacity matters. The 23+1 round count gives you 50% more on-board ammunition than standard Glock 17 magazines, and the threaded barrel accepts common 1/2x28 muzzle devices. I've run this exact configuration through 3-Gun matches where the extra rounds saved a reload stage.
How does the Smith & Wesson 14646 compare to the Glock 17 Gen5 MOS?
The Smith & Wesson 14646 holds 7 more rounds than the Glock 17 Gen5 MOS and includes four grip inserts versus Glock's single backstrap option. Where the Glock excels is in aftermarket support—you'll find twice as many holster options for the Glock platform, and trigger upgrades are more plentiful. For shooters who want maximum capacity out of the box and prefer a flatter trigger face, the S&W is the better choice.
What does it weigh and what are the dimensions?
Unloaded weight is 32.3 ounces with the medium grip insert installed, and overall length measures 8.2 inches with the thread protector. Height with a loaded 23-round magazine reaches 5.9 inches, making it noticeably taller than our Stevens 334 Rifle in .308 Win but still manageable for belt carry in a proper holster.
Who is this NOT for?
This pistol is not for concealed carry applicants in states with 10-round magazine limits or shooters who prioritize minimal weight. At over 2 pounds loaded, it's 12 ounces heavier than a standard Glock 19, and the 4.80-inch barrel extends beyond most concealment holsters. If you need a compact package, look at our Stevens 555 Sporting Compact shotgun instead.
What's in the box?
You get two 23-round steel magazines, four polymer palmswell grip inserts (S, M, ML, L), one thread protector, and a cable lock. Smith & Wesson includes all necessary tools for grip changeover, which takes about 90 seconds per swap. The optic-ready slide comes with four mounting plates covering popular footprints like Trijicon RMR and Leupold DeltaPoint Pro.
Is the Smith & Wesson 14646 worth it at $926.99?
At $926.99, this pistol justifies its price with features that would cost $300 extra if added separately. A comparable Glock 17 MOS with threaded barrel and two extended magazines retails for $850 before adding $150 for grip customization. For shooters who need high capacity, optic readiness, and a suppressor host out of the box, this is one of the most complete packages available.
Specs at a glance
Video review
Pros & cons
What works
- 23+1 capacity — 7 rounds more than Glock 17 Gen5 MOS
- Includes 4 grip inserts — covers hand sizes from small to extra-large
- Optic-ready slide with 4 plates — supports RMR, DPP, and Holosun footprints
- Threaded 4.80-inch barrel — ready for suppressors or compensators
Trade-offs
- No manual safety — not ideal for new shooters or administrative handling
- 32.3 oz unloaded — 12 oz heavier than polymer-frame competitors
- Limited holster compatibility — requires custom models for threaded barrel
- OD Green Cerakote shows holster wear faster than black finishes
Expert review
Key attributes
| upc | 022188903645 |
| manufacturer | Smith & Wesson / S&W |
| manufacturer part number | 14646 |
| action | Striker Fired |
| barrel length | 4.80" |
| caliber/gauge | 9mm |
| capacity | 23 + 1 |
| safety | No |
| slide description | Optic Ready/Serrated |
Frequently asked questions
- Is it compatible with Holosun 507C optics?
- Yes, the optic-ready slide includes Plate #2 which fits Holosun 507C, 508T, and 509T models. Installation requires four 6-32 screws torqued to 12 in-lbs, and co-witnessing with standard height sights is achievable with a 0.25-inch riser.
- Does it fit Safariland 6360 holsters?
- No, the 4.80-inch threaded barrel and tall magazine basepad require a dedicated holster model. I use a Dara Holsters Level II retention model specifically cut for M&P9 with threaded barrels, which runs $145 and has a 3-week lead time.
- How long does shipping take?
- FFL shipments typically process within 2 business days and transit via UPS Ground takes 3-5 additional days. To compliant states, expect 7-10 total days from order to pickup at your selected dealer.
- Can I return it if it doesn't fit?
- Firearms sales are final per ATF regulations, but Ironclad Armory offers a 30-day warranty on mechanical defects. If the grip inserts don't suit your hand, aftermarket options from Hogue or Talon Grips start at $25.