The Anderson Manufacturing AM-9 is a 9mm pistol-caliber AR-pattern pistol built on a direct-blowback platform with a 7.5-inch barrel. It accepts Glock-pattern magazines and ships with a 17-round magazine. The handguard is M-LOK compatible, and the finish is black throughout. 
 

Key Specifications 

• Brand: Anderson Manufacturing 
• Model: AM-9 
• Caliber: 9mm 
• Action: Semi Auto 
• Barrel Length: 7.5 in 
• Capacity: 17 rounds 
• Color/Finish: Black 
   

Detailed Features 

• AR-pattern lower accepts Glock-pattern magazines 
• 7.5-inch barrel in a pistol-configuration build 
• M-LOK handguard for accessory attachment 
• Polymer grips 
• Ships with 17-round magazine

Owners of the AM-9 tend to praise its price-to-build ratio. Anderson's budget-friendly positioning makes it an accessible entry into the 9mm AR pistol market, and most report solid function with quality 9mm ammunition. Mag-well reliability with Glock mags is occasionally noted as dependent on which Glock-pattern magazines are used.

The 7.5-inch barrel draws mixed reactions. Compact size is the point for those running it as a home-defense or range pistol, but shooters wanting a longer sight radius or more velocity from their 9mm loads sometimes feel constrained. The M-LOK handguard is generally well-received for its accessory flexibility.

The AM-9 is a workingman's PCC platform. It won't win comparisons to higher-end AR pistol builds on fit and finish, and the trigger splits opinions, but as a foundation for a 9mm AR build it gives owners a reliable starting point that can be improved incrementally.