Pro2A LEFT HANDED 6.5 Grendel / 6mm ARC Nitride Bolt Carrier Group

93 % of 100
Special Price $149.99 $179.99
In stock

Why Buy From Us?


Don't see the exact configuration you want? No problem, just let us know. Most of the time we can customize with the parts we have just to your liking.


All our uppers have a Lifetime Warranty to the original purchaser. Some conditions apply - click here for details.

Customer Service

We believe in customer service before and after the sale. We never take days or weeks to respond. Most of the time if you email or leave a message, we usually respond the same day or next business day.

Turnaround Time

Most of our uppers are built to order. Our most important goal is to get your order to you as quickly as possible without sacrificing quality. Please check the live status update on the banner above and/or on our homepage for current processing times.


We always specify the manufacturer of the major components therefore you know what you are getting. We only use quality components from well-known manufacturers.

Carrier Specifications

Bolt: LEFT HAND, Shot Peened

Material: 8620 Steel Type: M16 Full Auto 

Gas Key Material: 4130 Steel

Grade 8 Gas Key Screws Coating: Black Nitride Bolt

Specifications Bolt Material: 9310 Steel | Shot Peened

Extractor Material: 4140 Steel

Caliber: 6.5 Grendel / 6mm ARC

Mil-Spec O-Ring

Mil-Spec Gas Rings (3)

Cam Pin Material: 4140 Steel

Firing Pin Material: 8740 Steel, Hard Chrome Plated

Other: MPI Inspected


Lifetime Warranty – Our LEFT HANDED BCGs carry a lifetime, no questions asked, warranty. Simply put… Should any of our BCGs fail, return it to them for a brand new replacement.

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