Rosco Manufacturing K9-115-HY-DUFFY-556-7 K9 5.56 NATO 11.50" Nitride Stainless Steel Barrel K9-115-HY-DUFFY-556-7 K9-115-HY-DUFFY-556-7-PT

The K9 11.5” and 12.5” barrels offer a proprietary patrol length gas system that is smoother than carbine length, more reliable than mid-length. Features an optimized gas port to run reliably suppressed and/or unsuppressed. The 13.95” Barrel features a mid-length gas tube, with the rest of the barrel specs remaining the same as the 11.5” and 12.5” barrels. 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 with improved harmonics, fit and finish. Rosco recommends a minimum handguard length of 10″ with the 11.5” and 12.5” barrels.

• Barrel Material416R
• Barrel Caliber5.56
• Barrel Profile Continuous
• Twist 1/7
• Barrel Thread1/2 x 28
• Barrel Gas Block Size .750”
• Gas System Length Patrol (11.5/12.5”) Mid-Length- 13.95”
• Barrel Crown 11 Degree
• Barrel Finish Nitride
• Barrel Extension Finish Nitride