Cmmg Uppr Endvr 300 6mm Arc 3-10rd

The CMMG Upper Endeavor 300 in 6mm ARC is a modern precision upper receiver designed for shooters who prioritize accuracy and low recoil in an intermediate cartridge platform. This upper receiver is engineered for direct integration with standard AR-15 lower receivers, making it an efficient upgrade for those already invested in the AR platform.

Built around the innovative 6mm ARC round, this upper delivers impressive ballistic performance comparable to larger calibers while maintaining manageable recoil. It fires 100-115 grain projectiles at velocities that extend effective range and reduce wind drift compared to traditional 5.56 NATO loads, ensuring reliable feeding and extraction across quality ammunition types.

Precision rifle competitors, mid-to-long-range hunters, and tactical shooters will benefit from the modular nature of this platform, which allows for accessory compatibility and future reconfiguration based on mission requirements or shooting discipline. Field-tested performance in both competitive and practical shooting environments showcases the viability of this chambering for precision-oriented applications.