Add an additional 3 rounds to your Springfield Prodigy mags and improve the ergonomics and aesthetics at the same time.
We have designed the most intuitive to install mag extension on the market. It uses no tools, screws, clips, plates, or levers. The installation is identical to a stock base pad, simply remove the stock base pad and plastic retainer, then install our 7075 aluminum retainer and slide the new 6061 extension on. Installation and removal takes seconds and requires no tools. The assembly is rock solid, and the length stays within the 140mm tournament gauge when using a 17rd magazine tube and can also be used on 15rd mags for the prodigy compact as well as the 20rd magazine if you select the option that includes the 140mm +3 spring.
The extension features three deep v groove serrations for improved ergonomics when loading and stripping. The tool less design gives an incredibly clean look uncluttered by extra parts. We cnc engrave our logo onto the bottom of the retainer rather than the cheaper option of laser etching the anodizing.
We don't make compromises and neither should you, elevate your game with the Underworld Arms Mag Extension.
Specifications
Designed for 17rd and 15rd prodigy magazines with stock spring.
The 20rd magazine requires our 140mm +3 spring.
Material Base: 6061-T6
Material Insert: 7075-T6
Weight: 1oz
Length Overall: .825"
Not compatible with the compact prodigy grip module when the egw magwell is instaled.
This is a great tool free extension base that keeps me hitting targets longer at the range
This is a great tool free extension base that keeps me hitting targets longer at the range. They are also very nice looking and actually work great. I also opted for the longer magazine springs which I recommend due to the increased length of the new magazine.
T
Tom Buchanan
Stealth Arms (Platypus) perfect fit!
After ordering from a few others that stated they would work I finally found one that did! Thanks for making a great product that doesn’t break the bank!
Cheers,
The Dingo
J
John M
Beautifully built and clever easy to remove from magazine design
Beautifully built and clever easy to remove from magazine design. One problem, too thick around upper edge and with 17 round magazine it will not fit in Prodigy (or any 2011) with typical mag well. I had to remove a fair amount of metal to make it work.
A
Anonymous
Great quality product
Great quality product, easy instillation. High recommended.
