The K9 13.95 features a mid-length gas system with an optimized gas port to run reliably suppressed and/or unsuppressed. The K9 continuous taper is the most effective profile to dissipate heat from hard use. With weight shifted to the back of the barrel, modern attachments on the front of the rifle create a perfectly balanced and better handling rifle. Updated target crown carried over from the Purebred series. Features no 90 degree cuts, improved harmonics, fit and finish. NOTE: COMES WITH MID-LENGTH GAS TUBE This barrel serves as an HBAR for restrictive states. Barrel Length 13.95 Barrel Weight 29.8 oz Barrel Material 416R Barrel Caliber 5.56 Barrel Profile Continuous Twist 1/7 Barrel Thread 1/2 x 28 Barrel Gas Block Size 0.750 Gas System Length Mid-Length Barrel Crown Recessed Target Barrel Finish Nitride Barrel Extension Finish Nitride