The CMMG Banshee Mk4 pistol in .300 AAC Blackout pairs a compact 8″ threaded barrel with a 7″ EML M-LOK handguard to create a versatile AR-pattern platform. It is configured with factory ZEROED components — including the pistol grip, drop-in trigger, ambidextrous controls and a linear compensator — and ships with a 30‑round Magpul PMAG. This configuration is intended for short-barrel and suppressed setups as well as general-purpose compact AR use.
Key Specifications
- The caliber is .300 AAC Blackout.
- The barrel measures 8 inches.
- The action is Semi-Auto.
- The magazine capacity is 30 rounds.
- The handguard is a 7″ CMMG EML M-LOK.
- The barrel material is 4140 CM.
- The muzzle threads are 5/8 x 24.
- The muzzle device is a CMMG ZEROED linear compensator.
- The receivers are a Billet 6061 T6 upper and Mk4 forged 7075 T6 lower.
- The stock/brace is a CMMG RipBrace.
Built around the Mk4 platform, the Banshee provides a ready-to-customize base with factory-installed ZEROED components and a high-capacity magazine for practical compact-AR applications. Its threaded 8″ barrel and M-LOK handguard accommodate suppression and accessory mounting while keeping the overall package compact and usable for serious shooters seeking a durable, configurable pistol platform.
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