Midwest Industries Criterion CORE Combat Rail HD 223 Wylde 10.5" Upper Receiver Group

Midwest MI URG - 11.5 .223 Wylde Criterion CORE - 10.5 Combat Rail HD

LANTAC Urban Tactical Complete Upper Recvr 223Wylde 11.5"

AERO PRECISION AR15 5.56 NATO / 223 Rem 20" Complete Upper Receiver w/ Carry Handle | Black

LANTAC SF 15 DMR Complete Upper Receiver 223 Wylde 18"

Rock River Arms AR-15 Mountain Complete Upper Receiver 223 Remington (Wylde) 10.5" Chrome Moly Barrel 9.5" Handguard Black

Primary Weapons Systems MK1 Alpha LT 14.50" Railed Upper .223 Wylde 1:8 Mid-Length no BCG w/CH

AERO PRECISION M5 308 Assembled Upper Receiver | Kodiak Brown Anodized