Product Summary
The CMMG Resolute Mk4 is a high-quality complete upper receiver designed for the AR-15 platform. It features a 16.10-inch high-grade steel barrel chambered in .300 AAC Blackout, finished with a durable black nitride coating. The upper is equipped with an M-LOK free-float handguard for a secure grip and a sleek Armor Black finish on both the receiver and handguard. This versatile upper is an ideal choice for shooters looking to upgrade their existing AR-style rifle with a reliable and high-performance component.
