Mark Serbu demonstrates the flame hardening process for the ejection port edge of a BFGA receiver. This technique uses an oxy-acetylene torch to heat the steel to its austenitization temperature, followed by rapid quenching in water. The purpose is to harden the edge, preventing it from bending or dinging when large caliber casings are ejected, thereby increasing the receiver's durability.
You've reached the end! 1 videos loaded.
Gun Laws by State
Read firearms regulations for all 50 states + D.C.
Find Gun Dealers
Search licensed FFL dealers near you.
