The CMMG Banshee Mk4 pistol in .300 AAC Blackout with an Armor Black finish (brand part no. 30A240F-AB) is a compact, subsonic-tuned build made for suppressed and short-barrel performance without giving up supersonic capability. CMMG runs the 8-inch barrel under a CMMG EML handguard with full-length M-LOK slots on both sides and the bottom, plus M-LOK sections between the top Picatinny rail, leaving room for lights, grips, and a suppressor-ready muzzle device. The pistol comes equipped with a full set of CMMG ZEROED parts, including a drop-in trigger and a 60/90-degree ambidextrous safety selector. Among AR pistols tuned for .300 Blackout’s versatility, this Banshee Mk4 configuration favors shooters who run both subsonic and supersonic loads through the same platform.

Key Specifications

• Chambered in .300 AAC Blackout, this pistol runs a 30-round capacity magazine.
• The barrel measures 8 inches, tuned for both subsonic/suppressed and supersonic short-barrel use.
• The CMMG EML handguard carries full-length M-LOK on both sides and the bottom.
• Additional M-LOK sections sit between the top Picatinny rail segments.
• The safety is a CMMG ZEROED 60/90-degree ambidextrous selector.
• The grip is a CMMG ZEROED pistol grip.
• The trigger is a CMMG ZEROED drop-in unit.
• The upper is optic-ready, with no fixed sights installed.

Frequently Asked Questions

Is this pistol tuned for subsonic ammunition? Yes, the Mk4 platform is built for subsonic, suppressed, and short-barrel supersonic .300 Blackout performance.

What handguard does it use? A CMMG EML handguard with M-LOK on both sides, the bottom, and between the top rail sections.

What safety selector does it use? A CMMG ZEROED 60/90-degree ambidextrous selector.

Buy the CMMG Banshee Mk4 Pistol.300 Blackout

A full kit of ZEROED parts and a versatile 8-inch barrel make this Banshee Mk4 a strong choice for subsonic or supersonic .300 Blackout use. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.