This 9mm AR-9 Bolt Carrier Group is a black nitride BCG for 9mm AR builds that run Glock, Colt, Ruger or S&W style magazines. Drop it into your 9mm upper to finish the action.

The carrier is 9310 steel and the extractor is 4140 steel. A tough black nitride coating protects the whole group, adding durability, lubricity and corrosion resistance, and it wipes clean more easily than a bare finish. The gas key is staked so it won't work loose.

Features:

• 9mm AR-9 bolt carrier group
• Works with Glock, Colt, Ruger and S&W style magazine setups
• 9310 steel carrier
• 4140 steel extractor
• Staked gas key
• Black nitride finish for durability, lubricity and corrosion resistance

Fit check: this is a 9mm BCG for pistol-caliber AR uppers. It does not fit 5.56 / .223 AR-15 uppers. Make sure your upper, lower and magazine block or dedicated lower are set up for the magazine type you run, and use a 9mm-weight buffer as your build requires.

Lube the BCG before the first range trip and function-check the firearm before firing. Run a short break-in with quality ammunition to confirm reliable feeding and ejection.

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