14.5" 9mm AR9 Upper Receiver - MLOK

Phase 5 WSI Complete Upper Receivers are built for performance and reliability with innovative components to function no matter the situation. Every upper receiver is assembled on-site, with the same attention to detail we would give our personal weapon systems. When failure is not an option, you can trust that your Phase 5 Complete Upper Receiver will not let you down.

Upper Receiver: AR-9MM Upper Receiver (Forged)

Barrel: ROSCO MED Profile 14.5", 1:10 Twist Rate, 4150 CMV, 1/2 x 28 TPI

Caliber: 9MM

BCG: AR9MM, Black, Salt Bath Nitride finished, Compatible with both Colt and Glock pattern builds.

Rail: LPSN15-MLOK

Muzzle Device: FlashCan 1/2x28 (pin/welded)

Gas Block: N/A

Gas System: N/A

Charging Handle: DLCH15

Limited Lifetime Warranty

Prop 65 Warning