FailZero 9mm AR9 AR-15 Bolt Carrier Group – Black Nitride

The FailZero Black Nitride 9mm AR9 Bolt Carrier Group is a ready-to-install premium upgrade for your 9mm AR platform rifle or pistol. It is compatible with Glock and Colt style magazines across 9mm platforms.

This 9mm BCG is built to last, constructed with an 8620 heat-treated steel AR carrier, and treated with the black nitride finish, also known as salt bath nitride contributing to the longevity of the BCG, in terms of both wear and corrosion resistance. 

The BCG FailZero Black Nitride 9mm AR9 features a staked carrier guide (gas key), a 5.56 extractor, and a chrome firing pin. The ramped carrier design helps reduce stress on the hammer giving users a smoother and more reliable firing experience. With a weight of just 2 lbs, this bolt carrier group is a solid addition to your firearm accessories.

Product Features

• AR9 BCG Works with Glock and Colt Style Magazines
• Black Nitride Finish
• 8620 Tool Steel
• 5.56 Extractor
• Gas Pin

Frequently Asked Questions

Does the BCG affect accuracy?

The Bolt Carrier Group (BCG) does not directly affect the accuracy of a firearm but a BCG that is improperly fitted or malfunctioning can lead to operational issues, which may indirectly impact accuracy.

What is the best coating for a BCG?

Among the preferred coatings for a 9mm BCG, black nitride finishes stand out. Black nitride, also known as Salt Bath Nitride, offers a smoother surface compared to traditional phosphate and chrome coatings. This smoother surface requires less lubrication, enhancing the BCG’s performance and durability.

Can you use a 5.56 BCG for 300 Blackout?

Yes, you can use a 5.56 BCG for a 300 Blackout rifle. The 300 Blackout round was designed to be compatible with the standard AR-15 platform, which includes using the same BCG and charging handle as those used in a 5.56 NATO chambered rifle.