5.56/223/300BLK
M16 Style
"Sand cuts" on rails of carrier
Nitrided throughout assembly, including carrier and key
C158 or 9310 Bolt w/ Billet extractor
MPI
Shot Peened
Mil-Spec Tool Steel Extractor w/ Crane (NAVSPECWAR) o-ring & spring
Mil-Spec Staking
11.5 ounces
Made in USA