CMMG BANSHEE MK4 Upper Group 300 BLK 8

The CMMG Banshee Mk4 Upper Group is a compact .300 BLK upper designed for users seeking a short-profile AR15-compatible solution. It supports a range of 300BLK loadings from subsonic/suppressed to supersonic for close-quarters to mid-range applications. This 8 upper group ships complete with a bolt carrier group and ZEROED accessories for immediate installation into a compatible lower.

Key Specifications

• The platform is Mk4.
• The caliber is .300 BLK.
• The operating system is Direct Impingement.
• The barrel length is 8.
• The barrel twist rate is 1:7.
• The barrel contour is MT.
• The barrel material is 4140CM SBN.
• The muzzle device is a CMMG ZEROED Linear Compensator.
• The muzzle thread is 5/8 x 24.
• The upper receiver is Billet 6061 T6 Aluminum.

Finished in Cerakote standard options and fitted with a CMMG EML7 M-LOK hand guard and CMMG ZEROED ambidextrous charging handle, this upper group delivers a compact, ready-to-install solution for builders and shooters prioritizing size and versatility. The complete package, including the bolt carrier group and ZEROED accessories, streamlines installation and field use for a wide range of .300 BLK applications.