Calico 50-Round 9mm Helical Magazine with Integrated Rear Sight – M-913
Calico’s M-913 helical magazine packs 50 rounds of 9mm Luger into a compact, lightweight design and adds an integrated rear sight spine, making it a distinctive upgrade for any Calico 9mm carbine or pistol. Produced in the USA and molded from impact-resistant polymer, this magazine combines high capacity with practical sighting options built right into the housing.
Condition
Overall Condition: Very Good
Bore Condition: N/A
Specific Condition Notes: The polymer bodies show minor superficial scratches but no cracks or structural damage. Two magazines have folding rear aperture sights with clear white dots; one magazine has the fixed two-dot notch sight.
What’s Included
- One Calico 50-round 9mm helical magazine with flip-up two-dot aperture sight
- One Calico 50-round 9mm helical magazine with flip-up two-dot aperture sight
- One Calico 50-round 9mm helical magazine with fixed two-dot notch sight
Calico’s signature helical feed system coils cartridges around a central spindle, allowing a 50-round capacity without adding bulk below the firearm. This keeps the center of gravity high and forward, aiding balance and maneuverability.
The integrated rear-sight spine eliminates the need for a separate rear sight on the firearm. Two of the magazines feature a flip-up aperture that presents twin white reference dots when deployed; the third magazine uses a fixed two-dot notch for shooters who prefer a low-profile option.
Molded from black, glass-reinforced polymer, each magazine resists impact, heat, and solvents common to range use. The exterior texture offers a secure grip when inserting or removing the magazine, and the winding knob remains accessible for quick tension adjustments.
Manufactured in the United States, the M-913 carries Calico Light Weapon Systems’ part number on the body, ensuring compatibility with factory-spec Calico 9mm platforms.