SAA 16" 5.56 NATO Nitride 1:7 M4 9.25" Keymod FF Billet Upper Receiver

SAA 16" 5.56 NATO Nitride 1:9 HBAR 7.25" Keymod FF Billet Upper Receiver

SAA 16" 5.56 NATO Nitride 1:7 M4 15.25" Keymod FF Billet Upper Receiver

SAA 16" 5.56 M4 1:7 FF YHM SLK Rifle Length Keymod Complete AR-15 Forged Upper Receiver

SAA 16" 5.56 M4 1:7 FF YHM SLR Mid-Smooth Complete AR-15 Forged Upper Receiver

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

SAA 16" 5.56 M4 1:7 YHM 9.3" 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