Calico M-951 9mm Luger Semi-Auto Rifle, 16-inch Barrel, 50-Round Top-Mounted Helical Magazine, Matte Black
Made in the USA by Calico Light Weapon Systems, this M-951 stands out for its distinctive top-mounted helical magazine system and 50+1 capacity. It features a 16-inch barrel with a multi-port muzzle brake/compensator, a twin-rod telescoping stock, and an integral vertical foregrip for a compact, controllable layout. The rifle is finished in matte black with a polymer frame and metal receiver, and it includes a factory-marked 50-round magazine.
Condition
Overall Condition: Poor condition.
Bore Overall Condition: Fair - Generally clean, some residue or smudges, slight corrosion.
Specific Condition Notes: The firing pin will not reset and fire consistently, and inspection found a damaged spring. There may be additional parts that need replacement or may be missing, and a gunsmith familiar with the platform should repair it. The magazine appears to have issues and is non-functioning. This firearm is sold AS-IS.
What's Included
- Factory Calico top-mounted 50-round 9mm helical magazine (marked "CALICO 9MM ONLY")
- Loose coil spring and slender rod (broken spring provided for possible replacement dimensions)
The M-951 uses a top-mounted helical magazine that provides a 50+1 capacity in 9mm Luger. Ejection is to the right, and the charging handle sits on the right side beneath the magazine with a round knob for positive operation. Model and caliber markings are present on the receiver and the magazine.
The 16-inch barrel is fitted with a multi-port muzzle brake/compensator. The rifle wears a matte black finish over a metal receiver with a durable black polymer frame, balancing strength and weight. Sling loops are positioned under the forend and near the receiver for carry options.
Furniture includes a twin-rod telescoping stock and a polymer forend with an integral vertical foregrip. The listed length of pull is 14.0 inches, offering a straightforward shoulder fit within this compact configuration.
Controls and sights are simple and functional, with a two-position safety lever and an elevated rear sight assembly on a bracket. The raised rear sight aligns with the rifle’s high-mounted magazine layout.
Manufactured in the USA by Calico Light Weapon Systems, this example includes a factory Calico 50-round helical magazine marked specifically for 9mm use. A broken coil spring is included for possible replacement dimensions, along with a slender rod, providing useful references for parts sourcing during service.




