5.56 UPPER FEATURES & SPECS:

• CALIBER: 5.56 NATO
• CLEAR HARD COAT ANODIZED 7075 ALUMINUM RECEIVER (shades of tan may vary)
• FREE FLOATING 6061 ALUMINUM M-LOK HANDGUARD (shades of gray (grey?) may vary)
• 1:5 TWIST BARREL
• MUZZLE:  1/2-28 THREADS, TAPERED MUZZLE
• 1/2-28 CHERRY BOMB
• 2-PC BCG
• RADAIN RAPTOR CHARGING HANDLE

DOES INCLUDE BOLT CARRIER GROUP, RECOIL SPRING, REAR PLUG / O-RING, GUIDE ROD, AND CHARGING HANDLE.