Spikes Tactical ST5B503 AR-15 Bolt 5.56 HPT/MPI Bolt Assembly – Nickel Boron Finish

Description

A high quality bolt is a must in any AR-15. Whether you need a spare bolt or are looking to upgrade an existing rifle, look no further. This is the same bolt we use in our builds.

Mil Spec Bolt

Features:

• Phosphate and Nickel Boron Finish
• 158 Carpenter Steel
• Shot Peened
• High Pressure Tested (HPT)
• Magnetic Particle Inspected (MPI)

Mil Spec Extractor:

• 8620 Tool Steel
• Phosphate and Nickel Boron Finish
• Extractor Spring
• Black Extractor Insert
• Viton O-Ring
• Weight: 1.53oz