The Tacfire BAR55618-M4 5.56 NATO M4 Contour Carbine Barrel ensures unmatched precision and performance. Crafted from high-grade 4150 chrome moly steel and enhanced with a durable nitride coating, this barrel delivers exceptional reliability in any shooting environment. Type: 5.56 NATO 1:8 Twist Nitride 16" Barrel Material: 4150 Chrome Moly Steel Finish: Nitride Length: 16" Elevate your shooting experience with the Tacfire BAR55618-M4 barrel for superior accuracy and dependability.