SAA 16" 5.56 M4 1:7 YHM 15" Diamond-DX FF Complete AR-15 Upper Receiver

SAA 16" 5.56 NATO Nitride 1:7 M4, KM2-KEYMOD Free Float Upper Receiver

SAA 16" 5.56 M4 1:7 YHM Diamond M-Lok DualRail SamePlane FF Complete AR-15 Upper Receiver

SAA 16" 5.56 NATO HBAR 1:9 Carbine FF Budget Series3 Complete AR-15 Upper Receiver

SAA 16" 5.56 NATO M4 1:7 YHM KR7 Keymod Complete AR-15 Forged Upper Receiver

SAA 16" 5.56 HBAR 1:9 FF YHM Mid-Keymod Slant Complete AR-15 Forged Upper Receiver

SAA 16" 5.56 HBAR 1:9 FF YHM SLK MidLength Keymod Complete AR-15 Forged Upper Receiver

SAA 16" 5.56 HBAR 1:9 Mid YHM 15" Todd Jarrett FF Complete AR-15 Upper Receiver

SAA 16" 5.56 HBAR 1:9 YHM RifleLength Todd Jarrett FF Complete AR-15 Upper Receiver

SAA 16" 5.56 M4 1:7 FF YHM SLR Rifle-Quad-Rail Complete AR-15 Forged Upper Receiver

SAA 16" 5.56 M4 1:7 YHM-5000 Smooth Forearm, FlipFront-Sight Complete AR-15 Upper Receiver

SAA 16" 5.56 M4 1:7 YHM-Todd Jarrett, FlipFront-Sight Complete AR-15 Upper Receiver

SAA 16" 5.56 NATO M4 1:7 Carbine FF Budget Series2 Complete AR-15 Upper Receiver

SAA 16" 5.56 HBAR 1:9 YHM 12" Diamond FF Complete AR-15 Upper Receiver

SAA 16" 5.56 HBAR 1:9 YHM SpecterLength Diamond FF Complete AR-15 Upper Receiver

SAA 16" 5.56 Nitride HBAR 1:9 Mid YHM Todd Jarrett FF Complete AR-15 Upper Receiver

SAA 16" 5.56 NATO Mid MLOK Series AR-15 Upper Receiver

SAA 16" 5.56 NATO Matrix Lavi15 M4 1:7 Nitride, 15" KEYMOD Free Float Upper Receiver

SAA 16" 5.56 NATO Free Float Mid Slant Utility Complete AR-15 Upper Receiver - CUSTOMIZABLE

SAA 16" 5.56 NATO Standard M4 Series Complete AR-15 Upper Receiver - CUSTOMIZABLE

SAA 16" 5.56 NATO BudgetC Series Nitride, 10" KEYMOD Free Float Upper Receiver

SAA 16" 5.56 NATO BudgetC Series Nitride, 10" MLOK Free Float Upper Receiver

SAA 16" 5.56 NATO BHW HBAR 1:8 SS Black Oxide, Mid FF YHM Keymod Complete AR-15 Forged Upper Receiver

SAA 16" 5.56 NATO M4 1:7 Nitride, Odin Works K15.5 02 Lite Free Float Upper Receiver