In the debate between the 6.5 Grendel and 6mm ARC upper receivers, each option offers unique strengths for AR-15 enthusiasts seeking optimized performance for their specific needs. The 6.5 Grendel has carved out a reputation for its impressive balance of power and precision at medium to long distances, making it popular among hunters and target … Continue reading 6.5 Grendel Upper Receiver vs 6mm ARC Upper Receiver