The Radical Firearms 5.56mm upper is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that build and hit the range. No matter what your style of shooting is, Radical Firearms has you covered.

• Free float rail system
• Forged 7075 T6 Aluminum
• Type III Anodizing
• Nitride Bolt Carrier Group
• Mil-Spec Charging Handle