Toolcraft Cage Code BCG's (gov contract specs)

Bolt:

158 Carpenter Steel per Government Spec
MPI Inspected1
Ejector: Machined from solid 4140 material  
Extractor: Shot Peened Hardened D2 tool steel 
O-Ring: Mil-Spec 
Gas rings (3): Milspec 
Manganese Phosphate per Government Spec

Bolt Carrier:
8620 steel
Heavy Duty M16 design
Grade 8 Gas Key Screws, Staked
Gas Key Material - 4140
Chrome lined gas key and carrier interior
Manganese Phosphate per Government Spec
Government contract 1B1B6 engraving

Cam Pin:
8620 steel
Manganese Phosphate per Government Spec

Firing Pin:
Mil-spec firing pin made from centerless ground 8740 steel, hard chrome coated

 

* All Toolcraft bolts are MPI inspected, but not necessarily marked MPI

*Fully warrantied from Toolcraft *see Toolcrafts terms*

UPC
MFG Toolcraft
MODEL TOOLCRAFT .223/5.56 BOLT CARRIER GROUP BLACK 1B1
TITLE TOOLCRAFT .223/5.56 BOLT CARRIER GROUP BLACK 1B1B6 C-158 MPI COMPLETE BCG

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