M16 Carrier Machined from 8620 6.5 Grendel Bolt machined from case hardened 9310 Steel Type 2 Bolt Face (.136) Forged Gas Key Properly Staked 4340 Steel Extractor Mil-Spec Extractor Spring and O-Ring Grade 8 hardware Shot Peened Bolt HPT/MPI Carrier, Gas Key, Cam Pin, & Bolt, Nitride inside and out Test Fired complete before shipping to ensure proper function Additional Info
Caliber 6.5 Grendel Material 8620 Steel Finish Nitride