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TOOLCRAFT BCG .223/5.56 BOLT CARRIER GROUP NI-BO ROUND C-158 MPI COMPLETE

Brand: Toolcraft Inc.
Product Code: T00AUTO-010
Availability: In Stock
$124.99
$92.95

New, by popular demand, all our AR-15 Toolcraft BCG's will feature Mil-Spec Carpenter No. 158 Bolts.  And, as always, all our Toolcraft carriers are are plated by UCT Coatings in Florida, with the EXO coating.   UCT is the originator of EXO coating, a patented, high-performance nickel boron coating.  

Bolt Subassembly:
​Bolt: Carpenter No. 158 Alloy Steel, Shot Peened
MPI Inspected
Extractor: Shot Peened Hardened D2 tool steel 
O-Ring: Mil-Spec 
Gas rings (3): Milspec 
Coating: Nickel Boron Plated 

Bolt Carrier:
Heavy Duty M16 design
8620 steel, plated
Gas key: hardened billet 4140 machined, plated
Gas Key Screws,: 
Grade 8 properly staked (heavy strike).  Screws on faceted model may or may not be plated.
Nickel Boron Plated (UCT Coatings in Florida)

Cam Pin:
8620 steel Nickel Boron Plated

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

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