Upper Group, Unsuppressed ZEROED BANSHEE, Mk4, 300BLK, 6.5"

300BLK earned its reputation in platforms just like this — short, compact, and purpose-built.

The ZEROED BANSHEE Mk4 Upper Group gives you the Direct Impingement reliability of the Mk4 platform with a ZEROED Faux Suppressor that tucks inside the oversized, dad bod-ish 11" M-LOK handguard.

The result is a suppressor-profile build that looks the part without the NFA tax stamp or suppressor regulations.

Drop it onto any standard Mk4/AR15 lower receiver and you're ready to run.

Suppressor Compatibility and M-LOK Clearance

With a 1.72 inch internal diameter, the ZEROED handguard clears most modern suppressors. However, mounting M-LOK accessories in slots directly surrounding a tucked suppressor will significantly reduce internal clearance.

CMMG cannot guarantee the fitment of M-LOK accessories in these locations due to variances in suppressor and hardware sizes. Depending on your setup, modifying or shortening the M-LOK mounting screws may be required to prevent contact with your suppressor. Always verify clearance before use.

Lifetime Quality Guarantee: We aim to please, that's why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects.