Warne Magazine Extension – S&W M&P 9/40, Black, +3/+4
Warne 3306 Magazine Extension Black, +3 (9mm Luger), +4 (40S&W), for S&W M&P 9/40
$27.40
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In stock
This Warne magazine extension (mfr. part no. 3306) fits Smith & Wesson M&P 9/40 magazines, adding 3 rounds of 9mm Luger or 4 rounds of .40 S&W depending on the host magazine’s caliber, finished in black. Its ergonomic shape and finger grooves make the magazine easier to grip and strip from the pistol if needed.
Key Specifications
- Adds 3 rounds of 9mm Luger or 4 rounds of .40 S&W, depending on the host magazine.
- Fits S&W M&P 9/40 magazines.
- Finished in black.
- Includes finger grooves for easier magazine stripping.
- Ergonomic shape aids reliable insertion.
- Ships as a bolt-on extension, not a standalone magazine.
- Manufactured by Warne.
Frequently Asked Questions
How many rounds does this extension add?
3 rounds on a 9mm M&P magazine, or 4 rounds on a .40 S&W M&P magazine.
Does this replace my whole magazine?
No, it bolts onto your existing S&W M&P 9/40 magazine to add capacity.
Buy the Warne M&P 9/40 Extension
Shop the Warne lineup or browse our full Handgun Magazines selection to find the right fit for your firearm.
Additional Information
| UPC | 656813108084 |
|---|---|
| Manufacturer | Warne |
| Manufacturer Part Number | 3306 |
| Caliber/Gauge | 9mm |
| Capacity | 2 |
| Model | Magazine Extension |
| Product Type | Magazine Extension |
