Rock Island Armory Rock Ult Cco 9mm/22tcm9r 4.2"

The Rock Island Armory Rock Ultra Compact Officer (Rock Ult CCO) in 9mm/22 TCM9R is a dual-caliber semi-automatic pistol purpose-built for tactical professionals, law enforcement, and civilian shooters who demand versatility and compact carry capability. This 4.2-inch barrel platform allows shooters to maintain proficiency and tactical readiness with two distinct caliber options from a single, agile platform—a significant operational advantage for specialists requiring flexible engagement capability without weapon system sprawl.

Built on a 1911-pattern frame in black Parkerized finish, the Rock Ult CCO delivers a durable, corrosion-resistant platform suitable for harsh operational environments. The 8+1 capacity (eight rounds in magazine, one in chamber) reflects the compact officer-sized frame geometry while maintaining combat-effective firepower. Sights are mission-configured with front fiber-optic and rear LPA MPS1 adjustable units, providing rapid target acquisition in varied lighting conditions and allowing elevation/windage correction for distance engagements or ammunition variation compensation between the 9mm and 22 TCM9R loads.

This pistol excels for off-duty law enforcement backup weapons, backup primary systems, and civilian defensive carry where modularity enhances operational flexibility. The 22 TCM9R (Tactical Compact Magnum) delivers ballistic performance exceeding standard 9mm while maintaining controllability in the compact form factor. Shooters switching between calibers should verify ammunition availability and confirm point-of-aim shifts between loads; the adjustable rear sight accommodates this variance. The reduced overall length and 1-pound weight profile prioritize concealment without sacrificing ergonomic controls or reliable operation across both chamberings.