Anderson AM-15 Stripped Lower Receiver (MULTI CAL)
The Anderson AM-15 stripped lower receiver is an AR-15 pattern lower marked "MULTI CAL" for compatibility across common AR-platform chamberings when built with the appropriate upper and components.
Roll-marked "ANDERSON MANUFACTURING" with "HEBRON, KY" and standard "SAFE/FIRE" selector markings. Other lower parts (trigger group, safety, magazine catch, takedown pins, buffer retainer, etc.) are not installed unless pictured.