Left Hand Complete AR15 Upper Receiver- 5.56, 16" Barrel, 15" MLOK

Upper

• Barrel Length-16”
• Barrel Material- 41V50 Button Rifled Barrel
• Chamber- 5.56 NATO
• Twist Rate 1:7
• Muzzle Device Milspec A2 birdcage
• Extension- M4
• Gas System- Mid length
• Gas Block- Low profile .750 Phosphate Finish
• Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
• Handguard- 15”, High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut, Anti rotation tabs do not fit our upper extrusion, they are relieved on left hand uppers
• Charging Handle- Milspec with Enhanced Large Billet Latch

• M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection
• Bolt is machined from a single piece aircraft/bearing quality 9310 steel, heat treated properly, precision ground, Shot Peened and MPI’d
• Firing pin is machined to the mil-spec print from 8740, precision ground, and chrome plated
• One Piece Billet Fully Machined Enhanced Extractor, Phosphate coated for Increased reliability and corrosion resistance
• S7 tool steel ejector and extractor retaining pin
• 4130 Gas Key, precision staked using our hydraulic staking machine
• Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated

All HFA complete upper receivers are test fired for feed and function using commercially loaded ammunition