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The Springfield Armory Echelon 4.0C magazine gives you serious firepower for a compact pistol. With 18 rounds of 9mm capacity, this extended magazine transforms your concealed carry setup from a daily workhorse into a high-capacity platform without sacrificing the benefits of a compact frame. Whether you're heading to the range or prefer having more ammunition available, this magazine delivers the capacity boost owners of the Echelon 4.0C have been looking for.
This magazine is engineered with stainless steel body construction combined with a blacked-out, corrosion-resistant coating that protects against wear and environmental exposure. The foundation holds up whether you're running drills in outdoor conditions or maintaining an everyday carry setup. The high-tensile steel spring and polymer follower work together to ensure consistent feeding performance and proper round alignment with every reload.
The numbered witness holes along the side let you count remaining rounds at a glance without unloading the magazine. It's a small detail that pays dividends when you need situational awareness. The extended polymer basepad provides the grip surface needed for faster tactical reloads while remaining durable under regular use. The basepad's design integrates seamlessly with the Echelon's frame, so you're getting clean, snag-free carry without compromising on speed when you need it.
This 18-round magazine pairs perfectly with the Echelon 4.0C's flush 15-round mag to give you multiple carry and range options. The extended capacity makes it ideal for range sessions where magazine changes eat into shooting time, and having a spare magazine is always smart planning for any loadout. Springfield designed these magazines as part of the integrated Echelon system, so you get genuine factory reliability and fit.
Yes, full-size magazines will function in the compact Echelon 4.0C. However, they will extend further below the grip and may cause over-insertion issues when reloading from slide lock if inserted too aggressively. Compact magazines will not fit in the full-size 4.5F. For the cleanest fit and carry profile, use the 15 and 18-round compact magazines designed specifically for the 4.0C.
The witness holes are positioned along the back of the magazine body and are numbered at intervals so you can quickly count how many rounds remain loaded without removing the magazine from your pistol. This is useful for tactical situations, competitive shooting, or simply managing your loadout on the range.
The 18-round magazine will add vertical height to your carry setup compared to the flush 15-round mag. Many carriers use it for duty setups or when concealment takes a secondary priority to capacity. The extended polymer basepad helps with grip and reload speed, making it excellent for training sessions and range use where the extra bulk isn't a concern.
The extended polymer basepad gives you more grip surface for faster, more controlled reloads. It's textured to prevent slipping and is durable enough to handle regular use. The polymer construction is lightweight and won't rust or corrode, and it integrates with the Echelon's adaptive grip texture for a unified feel across the magazine and pistol.
| UPC | 706397981884 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | EC6018C |
| Caliber/Gauge | 9mm |
| Capacity | 18 |
| Color | Black |
| Model | |
| Package Height | 1.0 |
| Package Width | 2.5 |
| Product Type | Accessory-Magazines |
| Shipping Weight | 0.2 |
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