Toolcraft BCG 5.56 DLC Grey C158 MPI Bolt OCKS Screws

NOW WITH UPGRADED OCKS SCREWS !

Bolt Carrier:
Design: Heavy Duty M16
Material: 8620 steel, coated
Gas key: hardened billet 4140 machined, coated
Gas Key Screws: Grade 8 properly staked (heavy strike)
Coating: GREY Ion Bond (DLC Tribo-41) coating^1,4

Bolt Subassembly:
Material: Carpenter No. 158 Alloy Steel, Shot Peened
MPI: Yes, MPI Inspected³
Extractor: 4140 Heat Treated & Shot Peened 
O-Ring: Mil-Spec material 
Gas rings (3): Milspec 
Coating: GREY Ion Bond (DLC Tribo-41) coating

Cam Pin:
Material: 8620 steel
Coating: GREY Ion Bond (DLC Tribo-41) coating

Firing Pin:
Material: mil-spec firing pin made from centerless ground 8740 steel
Coating: hard chrome 

Notes:
1.  All BCG assemblies are supplied 100% complete from Toolcraft to WCArmory-direct to you.
2.  WCArmory has been selling Toolcraft BCG's since 2009.
3.  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.  Email WCArmory for this disclaimer from the Toolcraft Operations Manager.
 

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