The AM-15 MULTI Receiver is a component made by Anderson Manufacturing, a well-known firearms manufacturer specializing in AR-15 platform rifles and components. Here’s a breakdown of its key features and relevant information:
Manufacturer: Anderson Manufacturing
Model; AM-15 MULTI
Receiver Type; Stripped Lower Receiver
Caliber Marking: “MULTI” (multi-caliber compatible)
Material: 7075-T6 forged aluminum
Finish: Type III hard-coat anodized
Compatibility: Standard AR-15 components
Fire Selector Markings: Usually “Safe” and “Fire” (semi-auto)
Country of Manufacture: USA
Serialized Component: Yes (regulated part requiring FFL for purchase)

“MULTI” Caliber Marking: This indicates the lower can be used with various upper receivers in different calibers, such as .223 Rem, 5.56 NATO, 300 Blackout, 6.5 Grendel, and more.

Cost-Effective: Anderson lowers are among the most affordable quality AR-15 lowers on the market.

Modular Platform: Excellent starting point for a custom AR-15 build.