CMMG 30D120A Barrel Sub-Assembly 300 Blackout 16.10″


Build the perfect AR-15 upper group with the CMMG 30D120A Barrel Sub-Assembly. Crafted from 4140 chromoly steel, it boasts a 16.10″ carbine length, a medium taper profile, and a stylish black nitride finish.

SKU: 815835016238 Categories: , ,


CMMG 30D120A: Superior Barrel Sub-Assembly for AR-15

Crafting your custom AR-15 upper group just got easier with the CMMG 30D120A Barrel Sub-Assembly. This 16.10″ 300 Blackout barrel, fabricated from 4140 chromoly steel, is designed to take your firearm performance up a notch.

Ready for Customization

Perfect for custom AR-15 upper group builds, the 30D120A comes with a properly installed M4 barrel extension. Craft your dream weapon with ease.

Durable Material

Made from 4140 chromoly steel, this barrel ensures longevity. Experience reliable performance, shot after shot.

Optimized Length and Profile

Featuring a 16.10″ carbine length and medium taper profile, the 30D120A is designed for precision and weight balance. Your target stands no chance.

Sleek Black Nitride Finish

The 30D120A sports a black nitride finish, adding a touch of elegance to its sturdy functionality. Make your AR-15 not just better, but also sleeker.

What’s Included

  • 1x CMMG 30D120A Barrel Sub-Assembly (300 Blackout, 16.10″, Black Nitride Chromoly Steel)

Additional information


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