Attention
Attention
11.5" FLUTED 1:9 TWIST M4 AR15 FLAT TOP UPPER RECEIVER ASSEMBLY WITH SUPER SLIM FREE FLOAT HANDGUARD - 5.56 / .223
-AVAILABLE WITH OPTIONAL BLACK NITRIDE BOLT GROUP ASSEMBLY
For pistol and SBR applications, our 11.5" Flat Top Upper Receiver Assembly provides the complete upper ready to drop on your lower without having to assemble all the small parts! Our assembly team builds the upper receiver with a 11.5" flutted heavy barrel and super slim free float car handguards so its ready to go.
The complete 11.5" FLUTED 1:9 TWIST M4 AR15 FLAT TOP UPPER RECEIVER ASSEMBLY WITH SUPER SLIM FREE FLOAT HANDGUARD comes standard with the following parts:
Complete upper is also available with the optional BLACK NITRIDE Bolt Carrier Group (04945) installed. Please select preference when ordering.
This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. 
