With almost 50 years of experience, FIMS is a world leader in machining and machining solutions. Since 2016 FIMS has been paving the way to make in impact in the defense industry and the manufacturing of firearms and accessories.

The FIMS Nickel Boron Bolt Carrier Group is a no-nonsense top shelf BCG that you can depend on. The nickel boron coating provides more resistance to wear and corrosion, an ultra low co-efficient of friction, added lubricity, and improved overall performance.

Specifications and Features:
Bolt: AISI 9310 Alloy Steel
Carrier: 8620 Steel
Extractor: Shot Peened Hardened D2 Tool Steel
Magnetic Particle Inspected
Heavy Duty M16 Design
Nickel Boron Finish
Lifetime Warranty