Luth-AR 16" Lightweight Barrel Complete Upper Receiver, 223 Remington, Black Finish, 15" Palm Handguard Keymod, 1:9 Twist, Complete Barrel Assembly w/BCG, Fits AR-15 BAA3-L16

Yankee Hill Machine Co A3 Upper Receiver, Fits AR15, 7075-T6 Aluminum, Anodized Finish, Black YHM-100

Wilson Combat SBR, 556NATO, 11.3", 1:7, Carbine Length, Stainless, Bead Blasted, Fits AR-15 TR-556SBRCG11RT7

TROY Industries Picatinny Rail Top Gas Tube, Fits AK-47, 5", Black Finish SRAI-AK1-T0BT-00

San Tan Tactical STT-15, Upper, 223 Rem, 556NATO, Black, FT STT-PILLAR-1

Luth-AR 24" Bull Barrel Complete Upper Assembly, 223 Remington, Black Finish, 15" Palm Handguard Keymod, Complete Barrel Assembly w/BCG, Fits AR-15 FTBL-B24

Luth-AR Stripped NC15 Forged Upper Receiver, Manufactured from 7075-T6 Aluminum, Hard-Coat Anodized, Features Upper Picatinny Rail for Mounting Optics and Accessories FTT-EA

Luth-AR Upper, Black, 1913 Rail for Mounting Optics and Accessories, Forged, Flat Top, Comes with Charging Handle, Forward Assist, and Dust Cover FTT-EA1

Luth-AR A2 Upper Receiver, Upper, 223 Remington, 556NATO, Black, AR15, Anodized UR-A2-A

Luth-AR A2 Upper Receiver, Stripped Upper Receiver, 223 Remington/556NATO, Fits AR-15. Anodized Finish, Black UR-A2-S

Noveske Chainsaw, Complete Upper Receiver, 556 NATO/223 Remington, 16" Barrel, A2 Flash Hider, MLOK Handguard, Radian Raptor LT Charging Handle, Anodized Finish, Black, Fits AR-15 03000523

Sons of Liberty Gun Works Broadsword 89 V2, Upper Receiver, 556NATO, 14.5", HUXWRX Flash Hider, Low Profile Gas Block, Black M4L89BSUPPER-14.5-556

Sons of Liberty Gun Works L89 V2, Complete Upper Receiver, 223 Wylde/556NATO, 13.7" Pinned (16.5" OAL) Button-Rifled Barrel, HUXWRX Flash Hider, Low Profile Gas Block, Black M4L89UPPER-13.7-556XL

Maxim Defense Industries PDX Complete upper, 556NATO, 5.5", Black, AR Rifles MXM-47813

Nordic Components 22RB Complete Upper, 22LR, 16" Match Grade Barrel, 1:16 Twist, Black Finish, A2 Flash Suppressor, Aluminum Slim Diameter Handguard, Stainless Steel Bolt, 10Rd Black Dog Magazine, Black Dog Machine Bolt Saver (for retaining bolt carrier group when upper is separate from lower) 22RB-UPPER-16-KIT

Sons of Liberty Gun Works L89 V2, Complete Upper Receiver, 556NATO, 11.5" Button-Rifled Barrel, A2 Flash Hider, Low Profile Gas Block, Black M4L89UPPER-11.5-556

Noveske Barrel, 300 AAC Blackout, 10.5", 1:7 Twist, For AR-15, Pistol Length Gas System, Pinned Gas Block and Gas Tube, Stainless 07000034

Noveske Shorty, 10.5" Barrel, 223 Remington/556NATO, 1:7 Twist, Carbine Length Gas System, Stainless, Fits AR-15 Includes Pinned Gas Block and Gas Tube 07000048

Noveske Infidel, 13.7" Barrel, 223 Remington/556NATO, 1:7 Twist, Mid Length Gas System, Stainless, Fits AR-15, Includes Pinned Gas Block and Gas Tube 07000052

Noveske Light Afghan Barrel, 223 Rem/556NATO, 14.5" Cold Hammer Forged, Fits AR-15, .750 Front Sight Base 07000128

Odin Works Barrel, Fits AR15, 300 Blackout, 8", Pistol Length Gas System, Threaded 5/8-24, Medium Profile, Nitride Finish, Includes Adjustable Gas Block, Black B-300-8-P-TG-BLK