20" FLUTTED HBAR QUAD RAIL AR15 FLAT TOP UPPER RECEIVER ASSEMBLY - 5.56 / .223

-AVAILABLE WITH OPTIONAL BLACK NITRIDE BOLT GROUP ASSEMBLY

Now you can get the classic 20" FLUTTED HBAR heavy barrel look and feel for your AR15 without having to assemble all the small parts!  Our assembly team builds the upper receiver with a 20" flutted heavy barrel and quad rail rifle handguards so its ready to drop on to your lower receiver. 

The complete 20" FLUTTED HBAR QUAD RAIL AR15 FLAT TOP UPPER RECEIVER ASSEMBLY - 5.56 / .223 comes standard with the following parts:

• 01040 - AR15 / M16 .223 / 5.56 1:9 TWIST 20" FLUTED HEAVY BARREL
• 00158 - AR15 M4 FLAT TOP UPPER RECEIVER WITH FORWARD ASSIST AND EJECTION PORT DUST COVER FOR AR15 RIFLE
• 03301 - CHARGING HANDLE ASSEMBLY
• 07284 - LOW PROFILE SHORT STEEL .750 GAS BLOCK FOR AR15
• 01658 - RIFLE / STANDARD LENGTH GAS TUBE FOR AR15 / M16
• 01660 - GAS TUBE ROLL PIN FOR AR15 / M16
• 04526 - UTG PRO MODEL 4 AR15 RIFLE LENGTH 13" FREE FLOAT QUAD RAIL
• 00283 - AR15 A2 "PARTIAL CAGE" FLASH HIDER
• 01661 - CRUSH WASHER FOR .223 / 5.56 / .22LR THREADED BARRELS - AR15 / M16

Complete upper is also available with the optional BLACK NITRIDE Bolt Carrier Group (04945) installed.  Please select preference when ordering.