Save off the combined price when you buy the  Aero Precision  M5 12.7″ ATLAS S-ONE Builder Set! This package deal features the pieces you need to start building your own M5 (.308) pistol, including an M5 Stripped Lower Receiver, M5 Assembled Upper Receiver, and 12.7″ Atlas S-ONE Handguard.

Aero Precision M5 Builder Set Includes:

• M5 Stripped Lower Receiver
• M5 Assembled Upper Receiver
• 12.7″ Atlas S-ONE Handguard
• All 3 pieces are finished in mil-spec Anodized Black