The LaRue Tactical LT15X01BLK is a stripped AR-15 lower receiver compatible with multiple calibers. It is machined from 7075 aluminum. The receiver is sold stripped, without any components installed, and is semi-auto compatible. 
 

Key Specifications 

• Brand: LaRue Tactical 
• Model: LT15X01BLK 
• Caliber: Multi-Caliber 
• Action: Semi Auto 
• Color/Finish: Black 
   

Detailed Features 

• Stripped lower receiver, no components included 
• 7075 aluminum construction 
• Multi-caliber compatible AR-15 pattern 
• Semi-auto fire control group compatible 
• Standard AR-15 lower dimensions

Builders who use LaRue receivers describe the machining tolerances as tight and consistent, which makes fitting a lower parts kit straightforward without the slop common in budget receivers. The LT15X01BLK is a frequent choice for people building a dedicated precision or competition AR where they want a quality foundation.

Ergonomics are standard AR-15 lower geometry, so any aftermarket grip, stock, or trigger will drop in without fitment issues. Owners note the anodizing holds up well over time, with no peeling or uneven spots reported in typical use.

Some builders feel the LaRue price premium is hard to justify versus other quality aluminum lowers when the receiver itself gets hidden inside furniture. Others consider it a set-and-forget investment for a build they plan to keep long-term.