BRN-4A(R) UPPER RECEIVER ASSEMBLIES WITH CHROME LINED BARRELS Assembled from All New Components – Now with Chrome Lined Barrels. Fits Standard AR-15 Lowers. The BRN-4A(R) Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HKA(R) 416 compatible handguard and any 1/2-28 muzzle device, and you’re ready to hit the range! Available in barrel lengths of 10.4, 13.7, 14.5, and 16 inch, these upper receiver groups are suitable for any need. Also available in standard and heavy profiles. Chrome lined bore and chamber of these barrels has been the go-to for h Mfg: Brownells
Sons of Liberty Gun Works L89 AR-15 14.5 inch 223 Wylde Upper Receiver Group Medium Midlength 1-7 HUX Black Original price was: $950.00.$892.50Current price is: $892.50. 
Ar-15 Super Duty Stripped Upper Receivers 5.56mm - Ar-15 11.5 Super Duty Stripped Upper Receiver Ddc Original price was: $1,150.00.$1,016.99Current price is: $1,016.99. 
Brn-4(R) Upper Receiver Assemblies With Chrome Lined Barrels – Brn-4 Assembled Upper 10.4”” Medium Chrome Lined Barrel Black
Original price was: $1,299.99.$1,234.99Current price is: $1,234.99.
