The double-stack 1911 market is absolutely exploding, but if you’ve spent any time window shopping, you’ve likely run into a frustrating roadblock. Traditional 2011 pistols deliver arguably the best triggers and accuracy on the planet, but they come with a hidden tax: the magazines. Buying a handful of proprietary 2011 magazines can easily set you back $300 to $500.
Enter the Stealth Arms Platypus. This custom double-stack single-action pistol has taken the firearms world by storm by solving the platform's biggest headache. It famously feeds from cheap, ubiquitous Glock 17 magazines. The Platypus perfectly bridges the gap between precision custom performance and everyday practicality.
The Magazine Mastery: Solving the $100 Problem
If you own a traditional 2011, you know the pain of buying extra magazines. They frequently cost anywhere from $60 to well over $100 each. Worse yet, many high-end race guns are notoriously picky about which magazine brands they will reliably feed without tuning.
The Platypus completely bypasses this issue. It runs flawlessly on standard Glock 17-style magazines. Whether you prefer factory Glock magazines, Magpul PMAGs, or extended sticks, the Platypus eats them all. This is a massive win for anyone who already owns a striker-fired 9mm and has a drawer full of magazines ready to go.
Stealth Arms didn't just slap a Glock magwell onto a 1911 frame, either. They meticulously engineered the internal geometry to match the unique feeding angle of the Glock magazine while maintaining the classic, natural grip angle that 1911 shooters demand.
A True Custom Experience Right Out of the Box
Most production pistols offer two or three factory color options. Stealth Arms takes a completely different approach with their online builder tool. When you order a Platypus, you are ordering a custom-built firearm tailored exactly to your aesthetic and functional preferences.
You can select custom slide windows, front and rear serrations, and direct-milled optics cuts that completely eliminate the need for weak, bulky mounting plates. From there, the digital sandbox allows you to mix and match Cerakote colors on the slide, frame, barrel, trigger, and safety. For shooters looking for an exceptionally flat-shooting experience, they even offer the Platypus Comp, which incorporates an integrated compensator to tame muzzle rise.
Engineering Differences: Platypus vs. Traditional 2011s
To appreciate the Platypus, you must understand how it differs mechanically from a traditional 2011:
- One-Piece Frame: Standard 2011s use a modular, two-piece design where a polymer grip module is screwed onto a steel or aluminum upper receiver. The Platypus features a rigid, one-piece lower machined entirely from 7075-T6 aircraft-grade aluminum.
- Over-Insertion Protection: Because Glock magazines are polymer, shoving them aggressively into a metal gun can cause damage. Stealth Arms designed a built-in ledge inside the magwell that acts as a physical hard stop, protecting your magazine lips during high-stress reloads.
- Weight Dynamics: Because the lower is entirely aluminum, the Platypus is surprisingly lightweight, weighing between 26 and 32 ounces depending on your barrel length and configuration. This makes it far more comfortable to carry all day than a heavy, steel-framed race gun.
Conclusion
The Stealth Arms Platypus isn't just a gimmick—it’s a masterclass in practical engineering. By combining the legendary single-action trigger of a 1911 with the unmatched reliability and affordability of a Glock magazine, Stealth Arms has created one of the most compelling firearms on the market. Whether you are a practical competitor looking to save on gear, a Glock enthusiast looking for a premium upgrade, or a value-minded buyer who wants a fully custom pistol, the Platypus delivers.