Complex sentence: The Barrel of Mehmetçik 1 is cold hammer-forged which allows the barrel to maintain its accuracy for over 20,000 rounds, with minimal degradation of muzzle velocity.
Split into simpler sentences: The Barrel of Mehmetçik 1 is cold hammer-forged. This allows the barrel to maintain its accuracy for over 20,000 rounds, with minimal degradation of muzzle velocity.