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Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel K9-115-HY-DUFFY-556-7-PT Color: Black, Finish: Nitride, 17% Off w/ Free Shipping

Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
1 of 3 images
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
2 of 3 images
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT
3 of 3 images
Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT

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Questions & Answers
The listing (as of 04/25/2026) says that this 11.5" barrel has mid-length gas. Does the barrel actually have carbine-length gas? Manufacturer Answer

the Rosco K9 Greenline Tactical collaboration barrel is a 13.95" barrel with a standard Mid-Length gas system, and the gas tube is included with the barrel.

by Rosco Customer Service, Manufacturer, April 29, 2026
The MPN says its a k9 kenetic consulting 11.5in with a patrol length gas system. Is this listing for the 11.5 or 13.95,ay want to change the MPN if 13 Can you answer this question?
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Customer Reviews
Helpful Positive Review
This barrel is it by bradskey, July 23, 2023
I have this barrel on my newest AR it shoots super good and accurate the gas port is just right. This is a high quality barrel and I highly recommend it. I have it paired with the nox flash 3 prong muzzle. It is the perfect length pinned and welded. ...
Read More...
2/2 found this helpful
Most Recent Reviews
11.5 barrel by Random Man, Verified Owner, April 19, 2026
Got barrel at an affordable price and shoots great.
Read All 2 Reviews
Color:
Black
Finish:
Nitride
Caliber:
5.56x45mm NATO
Barrel Length:
11.5 in
Barrel Profile:
Continuous Taper
Gas System Length:
Mid Length
Gas Block Journal Size-Diameter:
.750 in
Barrel Twist Rate:
1-7
Barrel Material:
416R Stainless Steel
Flutes:
No
Gun Make:
AR Platform
Gun Model:
M4
Weight:
2 lb
Condition:
New
Firearms Threads Per Inch:
1/2x28

Code: 3FY-ATB-PQ1-K9-115-HY-DUFFY-556-7-PT

MPN: K9-115-HY-DUFFY-556-7-PT

UPC: 850039693083

List: $185.00Save 17%
$153.89

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Product Info for Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel

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.image

Specifications for Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel:

Manufacturer: Rosco Manufacturing
Color: Black
Finish: Nitride
Fabric/Material: 416R Stainless Steel
Caliber: 5.56x45mm NATO
Barrel Length: 11.5 in
Barrel Profile: Continuous Taper
Gas System Length: Mid Length
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-7
Barrel Material: 416R Stainless Steel
Flutes: No
Gun Make: AR Platform
Gun Model: M4
Weight: 2 lb
Condition: New
Firearms Threads Per Inch: 1/2x28
Last Chance: Yes

Package Contents:

  • Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel
  • Gas Tube

What firearm models does the manufacturer say Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel is compatible with?

The manufacturer suggests that Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel is compatible with M4

Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel Orderable Models

List of Orderable Models

  • Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 11.5 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT , MPN: K9-115-HY-DUFFY-556-7-PT , UPC: 850039693083 , Code: 3FY-ATB-PQ1-K9-115-HY-DUFFY-556-7-PT

Rosco Manufacturing K9 Greenline 5.56mm Tactical Barrel Unavailable & Discontinued Models

List of Unorderable Models

  • USED Rosco Manufacturing K9 Greenline Tactical Barrel, 5.56 NATO, 13.95 inch, 1-7 Twist, 1/2 x 28 Thread, Mid-length, Black Nitride, K9-115-HY-DUFFY-556-7-PT, EDEMO1, Used, Condition Fair, Scratches , MPN: K9-115-HY-DUFFY-556-7-PT-EDEMO1 , Code: 3FY-ATB-PQ1-K9-115-HY-DUFFY-556-7-PT-EDEMO-SC-D
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