TOOLCRAFT 223/5.56 BCG PHOSPHATE-CHROME 1B1B6 CARRIER WITH C158 MPI BOLT

WCArmory3 has had lots of requests for these 1B1B6 engraved mil spec / mil contract 1B1B6 carriers specifically.  Toolcraft assembles the 1B1B6 carrier to an MPI inspected Carpenter 158 bolt to make a complete BCG.

Bolt Subassembly:
• ?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 Spec2

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 Spec2
• The carrier DOES have the government contract 1B1B6 engraving

Cam Pin:
• 8620 steel
• Manganese Phosphate per Government Spec2

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

Notes:
1.  All Toolcraft bolts are MPI inspected, but not necessarily marked MPI.  WCArmory requests MPI marked bolts but Toolcraft can not guarantee that all MPI inspected bolts will be MPI marked.  EmailWCArmory for this disclaimer from the Toolcraft Operations Manager.
2.  All BCG's are ordered direct from Toolcraft with the coating applied by Toolcraft's sub-supplier.  All coatings are purchased and furnished direct from Toolcraft, and their full warantee is obviously valid.
3.  WCArmory has been selling Toolcraft BCG's since 2009.