CM15 5.56 NATO 8″ Upper with Options

CM15 5.56 NATO 8″ Upper

• CM 6061 lightweight billet aluminum receiver
  • Reliefs featured throughout the receiver
  • Picatinny rail milled channel for a sleek/light weight option
• CM 6061 7.25″ MLOK handguard
  • QD Sockets at 3 and 9 o’clock
  • Full Picatinny top rail
• Choice of Suppressor Host Muzzle Device or Thread Protector
• CM15 Low Mass Bolt Carrier Group
  • 9310 Hardened Steel Bolt
  • 17-4 Stainless Steel Firing Pin
  • 8620 Carrier and Key
  • MPI Tested
  • Hardened Extractor S7 Steel
• CM15 Warhammer Ambidextrous Charging Handle – in collaboration with Breek Arms
• Superlative Arms Adjustable Gas Block
• CM Melonite Gas Tube
• CM15 5.56 NATO 8″ Barrel
  • CrMV
  • DRP Profile
  • QPQ Corrosion Resistant
  • 1:7 Twist
  • Carbine Gas
  • .750 Gas Journal
  • 1/2×28 threaded muzzle

CM15 5.56 NATO 8″ Upper: Ultra-Compact Firepower

The CM15 5.56 NATO 8″ Upper is engineered for maximum portability and rapid engagement in the tightest spaces. This ultra-short configuration is the definitive choice for personal defense weapons (PDW), vehicle-based operations, or any scenario where a standard carbine is simply too large.

Performance in a Micro Profile

While the 8-inch barrel length is exceptionally compact, it is precision-machined from 4150 CMV steel to handle the high-pressure environment of the 5.56 NATO cartridge. This upper is designed for shooters who prioritize maneuverability above all else. When paired with a pistol-length gas system, it provides the snappy, reliable cycling required for a dedicated “truck gun” or a discreet backpack build.

Fully Configurable for Your Mission

Our “Options” package ensures that your ultra-compact build doesn’t sacrifice ergonomics. You can customize this upper with a variety of M-LOK handguards to maximize rail estate for lights and lasers, or upgrade to a high-performance Bolt Carrier Group (BCG) to ensure long-term durability under the increased port pressures typical of short-barreled systems.

Key Features:

• 8” 4150 CMV Barrel: Nitride finished for extreme corrosion resistance and bore longevity.

• 5.56 NATO Chamber: Safely handles both 5.56 and .223 Remington ammunition.

• Pistol-Length Gas System: Tuned for reliable cycling in a sub-10″ format.

• Customizable Build: Selectable rails, BCGs, and charging handles to suit your specific needs.

The CM15 8″ Upper is the ultimate choice for the shooter who demands full-sized authority in a micro-sized package.