Midwest Industries Upper Receiver Rod, For AR-15 Barrels, Black, MI-URR

Wilson Combat Complete Upper Receiver, Super Sniper, .223 Wylde, 20 Inch Barrel, Rifle Length, 1-8 Twist, 1/2X28 Thread, M-LOK Handguard, Q-COMP, Armor-Tuff, Black, TR-UF223SSR20FQ8B

Aero Precision Complete Upper Receiver, M5E1, 24in Barrel, 6.5mm Creedmoor, Rifle Length, 1-8 Twist, 416R Stainless Steel, EM15 Handguard, Anodized Black, APAR308554M71

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 10.5 Inch Barrel W/Pinned FSB, Magpul MOE Handguard, A2 Flash Hider, Anodized Black, APAR502503M3

TRYBE Defense Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16in 5R Barrel, 1-7 Twist, 15in M-LOK Rail, A2 Flash Hider, BCG And CH, Nitride Black, UPPER16556

Rock River Arms Completed Upper Receiver, National Match A4 .223/5.56Mm, 16 Inch Barrel, Competition Profile, 1-8 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hider, Black, AR0785

Aero Precision M5 Complete Upper Receiver, 24in 6.5 Creedmoor SS Rifle Barrel, W/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Black, APAR538105M47

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 14,5In, Mid-Length Barrel, 1-7 Twist, 1/2X28 Thread, ATLAS R-ONE Handguard, FDE Cerakote, APAR700714M5

Rock River Arms Completed Upper Receiver, National Match A4 .223/5.56Mm, 20 Inch Barrel, Competition Profile, 1-8 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hider, Black, AR0784

Aero Precision EPC-9 Enhanced Complete Upper Receiver, 11in 9Mm, em-9.3in Handguard, FDE, APAR620276M86

Tacfire Stripped AR-15 5.56x45mm NATO Upper Receiver, Black Anodized, UP01C2

Rock River Arms Completed Upper Receiver, Operator ETR .308/7.62X51mm, 16 Inch Barrel, 1-10 Twist, Mid-Length Profile, 5/8-24 Threat, Free-Float Handguard, A2 Flash Hider, Black, OP0500BT

Grid Defense Complete Upper Receiver, 5.56Mm, 16 Inch, Carbine Length, 4150 M4 Barrel, 1-7 Twist, 14 Inch M-LOK Rail, A2 Flash Hider, OD Green, GD16E14GFR556OD

Alexander Arms Tactical Upper Receiver, AR-15, 6.5mm Grendel, 18 Inch Barrel, 1-8 Twist, 5/8X24 Thread, A2 Flash Hider, Black Anodized, UTA-65-10RD

Aero Precision M5 Complete Upper Receiver, 16in .308 Mid Barrel, W/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M22

Faxon Firearms Ascent Complete Upper Receiver, 16In, 350 Legend, FX35116-BG-U

Stag Arms AR-10 Stag 10 Upper Receiver, Assembly, .210 DPMS High Profile, Left Hand, Cerakote, FDE, STAG310880

Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver, 8In, 1-7 Twist, 5/8X24 Thread, ATLAS R-ONE Handguard, FDE Cerakote, APAR700711M1

Aero Precision M4E1 Complete Upper Receiver, 16In, 5.56, M4, Carbine Barrel, EQ-15 HG Gen 2, Anodized Black, APAR640251Q6