Description
The Warne PMAG 5.56 extension is a straightforward way to squeeze more firepower out of your existing Magpul magazines. It's an aluminum baseplate that swaps in for the factory one, turning your standard 30-round PMAG into a 35-rounder. Since you're not buying a whole new magazine, you get the capacity boost without the extra cost or weight of a full additional mag.
What makes this extension work in the field is the attention to handling. The aluminum construction gets hardcoat anodized for durability, so it'll stand up to use without wearing thin or losing its finish. More importantly, Warne added finger grooves that actually make a difference when you're pulling mags from a tight pouch or manipulating during reloads. The ergonomic profile makes insertion smoother and helps the magazine drop free when it's empty, which speeds up those reload transitions during training or competition.
Why Shooters Choose the Warne Red Extension
The red finish sets this apart if you're running a color-coded system for different ammo types or load-outs. It looks clean on the rifle and makes it dead simple to spot which mags are loaded with what. Beyond aesthetics, it's the same quality aluminum baseplate that comes in black, blue, and other colors. Everything about it is designed around the idea that you already trust your PMAGs, so why not just keep them and add capacity where it counts.
Installation and Compatibility
This is built specifically for Magpul PMAG 5.56-223 30-round magazines, so no guessing whether it'll fit. Swapping it in means removing the factory baseplate and clip, then sliding the Warne extension onto the magazine tube. You're not dealing with specialty tools or complicated procedures. The extension comes with a screw and washer to lock it all in place. Just make sure the magazine is empty and clear before you start.
Key Specifications
- Manufacturer: Warne Scope Mounts
- Manufacturer Part Number: 5005
- UPC: 656813113163
- Caliber/Cartridge: 5.56 NATO / .223 Remington
- Capacity Increase: +5 Rounds
- Compatible Magazine: Magpul PMAG 30-round AR/M4 5.56-223
- Material: Aluminum (6061-T6)
- Finish: Hardcoat Anodized
- Color: Red
- Feature – Finger Grooves: Yes, for improved grip and extraction
- Feature – Ergonomic Profile: Yes, for smoother insertion and handling
- Magazine Not Included: Extension baseplate only
What’s Included
- Warne PMAG 5.56 +5 extension basepad (red)
- Mounting screw and washer
Frequently Asked Questions
Will this Warne extension work with all PMAG 30-round magazines?
This red extension is built specifically for Magpul PMAG 5.56-223 30-round magazines. It won't work with PMAG 40-round magazines, 7.62 PMAGs, or other caliber variants. Always verify compatibility with your specific magazine before ordering.
Do I need a replacement spring when installing the Warne +5 extension?
Most PMAG 30-round magazines work with this extension using the existing spring. Some installations may benefit from a replacement spring depending on your specific magazine version, but it's not always necessary. Check the included instructions for your magazine generation, or reach out if you're unsure.
How much harder is it to load a full 35-round magazine?
Loading all 35 rounds by hand will feel noticeably firmer than a 30-rounder, especially as you get past 32-33 rounds. A magazine loader makes the process much easier. Most shooters find it practical for range sessions but prefer topping out at 33-34 rounds by hand for faster tactical reloads.
Can I use this extension in USPSA or 3-gun competitions?
Magazine extensions can be used in many competition formats, but rules vary by organization and division. Check your specific competition rules before relying on extended magazines. Some divisions have maximum magazine length restrictions that extensions might exceed.





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