Description

Toolcraft BCG Ion Bond AR15 / M16 Auto Bolt Carrier Group 9310 MPI Tested

All manufacturing and coating is done by Toolcraft.

100% Made in USA and includes Lifetime Warranty from Toolcraft. If ever a problem, simply call Toolcraft and they will take excellent care of you with their no questions asked Lifetime Warranty.



Bolt Assembly:

​Bolt: AISI 9310 alloy steel

MPI Inspected

Extractor: Shot Peened Hardened D2 tool steel

O-Ring: Mil-Spec

Gas rings (3): Mil-Spec

Finish: Ion Bond

Bolt Carrier:

8620 steel

Heavy Duty M16 design

Grade 8 Gas Key Screws, Staked

Gas Key Material: 4140

Finish: Ion Bond

Cam Pin:

8620 steel

Finish: Ion Bond

Firing Pin:

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

Ion bonded finishes are insanely durable and hard, which results in a very high level of corrosion and heat resistance, as well as a long-lasting finish. Ion Bonded BCGs mix the good qualities of both phosphate and nickel boron.

Ion bonded coatings are tough and strong like phosphate coatings, and remain slick and near friction free. Nickel Boron coatings will result in the smoothest finish, but Ion bonded BCGs aren’t far behind. Ion bonded is a great compromise if you don’t mind the increased cost.