Aero Precision M4E1 Builder Set with 9″ Atlas S-One M-LOK Handguard

The Aero Precision M4E1 Builder Set delivers premium modularity for your next AR-15 build. This set includes a stripped M4E1 upper and lower receiver paired with a sleek 9″ Atlas S-One M-LOK handguard in an eye-catching exotic tiger stripe finish – perfect for enthusiasts seeking standout aesthetics without compromising function.

• Upper/Lower: Forged 7075-T6 aluminum receivers with Type III hardcoat anodizing
• Handguard: 9″ Atlas S-One M-LOK (Tiger Stripe Cerakote)
• Compatibility: Fits standard AR-15/M4 parts (5.56/.223)
• Weight: ~1.3 lbs (handguard only)
• Finish: Proprietary tiger stripe pattern over durable Cerakote

Ideal for builders prioritizing lightweight handling and rail real estate. Free FFL transfer to any Tennessee dealer.