CMMG Dissent MK4 Upper Group 300 Blackout 10.5" Black - CMMG 30BC239HCA

This is an AR-15 upper receiver assembly chambered in 300 Blackout with a 10.5" barrel, designed for AR pistol builds. The Dissent MK4 upper features improved ballistics and a suppressor-friendly length, offering enhanced performance in a compact format. Assembly includes barrel, bolt carrier group, and upper receiver ready for installation onto a compatible lower receiver.