Complete Nickel Boron Plated M-16 BCG

• Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key)
• Laser Engraved with ST Spider logo
• Mil Spec Carrier
• 8620 Tool Steel
• Full Auto M-16
• Holes for Reduced Weight (-1oz)
• Bolt
• 158 Carpenter Steel
• Shot Peened
• High Pressure Tested (HPT)
• Magnetic Particle Inspected (MPI)
• Mil Spec Extractor
• 8620 Tool Steel
• Nickel Boron Finish
• Extractor Spring
• Black Extractor Insert
• Viton O-Ring
• Mil Spec Gas Key
• 8620 Tool Steel
• Grade 8 Hardware
• Properly Staked
• Firing Pin with Hard Chrome Finish
• Cam Pin Nickel Boron Finish
• Retaining Pin
• Weight: 10.5oz
• Lightweight Nickel Boron BCG