CMMG BBL 300BLK 8 4140CM SBN

The CMMG BBL 300BLK 8 4140CM SBN is a precision-engineered barrel designed for AR-style rifles chambered in 300 Blackout. Crafted from durable 4140 chromoly steel, this 8-inch barrel offers a balance of strength and lightweight performance. Its nitride finish enhances corrosion resistance and surface hardness, contributing to long-lasting reliability under various conditions.

Featuring a properly installed M4 barrel extension, the barrel assembly ensures consistent headspacing and seamless compatibility with AR platforms. The slim profile and black nitride coating provide a sleek, tactical appearance while maintaining rugged functionality. Ideal for custom upper builds, the CMMG BBL 300BLK 8 4140CM SBN delivers quality construction from a trusted manufacturer known for its commitment to precision and durability.