Odin Works AR-15 6.5 Grendel Type 2 Nitride Bolt Carrier Group

The Odin Works AR-15 6.5 Grendel Type 2 Nitride Bolt Carrier Group is a precision-engineered drop-in replacement for shooters running the 6.5 Grendel cartridge. Built to true mil-spec dimensions and manufactured in the USA, this BCG delivers the reliability and durability you need whether you're hunting medium game, reaching out on the long-range bench, or building a dedicated Grendel rifle. The Type 2 bolt face is purpose-built for 6.5 Grendel ammunition, so compatibility is guaranteed right out of the box.

Odin Works engineered this BCG around proven materials and finishes designed to reduce friction and simplify maintenance. The case-hardened 8620 steel carrier wears a black nitride coating—a low-friction finish that cuts down on the need for constant lubrication while resisting corrosion. The bolt itself is machined from case-hardened 9310 steel and finished with shot peening and manganese phosphate or black nitride for durability. Every critical component, from the hardened 4340 cam pin to the hard-chrome-coated 8740 firing pin, is finished to exacting standards. The extractor runs 4340 steel with manganese phosphate, paired with a mil-spec spring and O-ring for reliable extraction cycle after cycle.

You'll find the gas key secured with Grade 8 hardware and properly staked into a milled valley to prevent rotation and ensure consistent gas tube positioning. The bolt carrier group is magnetic particle inspected (MPI) and high pressure tested (HPT) at the factory, so you know it's been vetted for safety and performance before it ships. This is a no-compromise BCG for builders and shooters who demand accuracy, longevity, and peace of mind in a 6.5 Grendel upper.

Key Features

• Type 2 bolt face optimized for 6.5 Grendel cartridge
• True mil-spec dimensions with CNC-ground external surfaces for precise fit
• Black nitride finish minimizes friction and reduces lubrication requirements
• Gas key staked into milled valley with Grade 8 hardware for secure positioning
• Hardened 4340 cam pin and hard-chrome-coated 8740 firing pin
• Magnetic particle inspected (MPI) and high pressure tested (HPT)
• Made in the USA

Specifications

Frequently Asked Questions

Is this bolt carrier group compatible with standard AR-15 uppers?

This BCG is built to true mil-spec dimensions and will fit standard AR-15 receivers. However, the Type 2 bolt face is specifically designed for 6.5 Grendel ammunition, so you'll need a barrel and magazine configured for that cartridge. It is not compatible with 5.56 NATO or .308 Winchester uppers.

What makes the black nitride finish different from other coatings?

Black nitride is a low-friction coating that reduces the need for frequent lubrication compared to some other finishes. It also provides good corrosion resistance and durability under typical shooting conditions.

Has this bolt carrier group been tested for safety?

Yes. Every BCG is magnetic particle inspected (MPI) to detect internal flaws and high pressure tested (HPT) at the factory before shipment, ensuring it meets safety and reliability standards.

Why is the gas key staked into a milled valley?

The milled valley and staking process anchor the gas key securely to the carrier, preventing it from rotating or backing out during firing. This ensures consistent gas tube alignment and reliability over extended use.