As of August 1st 2022, Element Armament will not sell nor ship magazines with capacities greater than 10 rounds to the following states: California, Connecticut, Washington, D.C., Maryland, Massachusetts, New York, New Jersey, Vermont and Washington. By utilizing the Element Armament website and/or affiliated selling channels, the user/purchaser acknowledges that he/she is not a resident of the referenced states or locales and will not transport restricted or illegal items into those states.

Rosco Manufacturing K9 11.5″ Kinetic Consulting – Patrol-Length Gas w/Tube – 556NATO


1 in stock

SKU: Rosco_K9-115-HY-DUFFY-556-7-PT Categories: , ,


The K9 11.5 offers 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 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. We recommend a minimum handguard length of 10″ with this barrel.

Barrel Length:  11.5″
Barrel Weight:  25.47 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:  Patrol-Length
Barrel Crown:  Recessed Target
Barrel Finish:  Nitride
Barrel Extension Finish:  Nitride

Additional information

Weight 2.5 lbs
Dimensions 20 × 4 × 4 in


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