Combo: Rosco Manufacturing K9 11.5″ Kinetic Consulting 5.56 NATO + Kratos Gas Block

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.

NOTE: COMES WITH PATROL LENGTH GAS TUBE

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.

NOTE: COMES WITH PATROL LENGTH GAS TUBE

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
Barrel Crown	11 Degree
Barrel Finish	Nitride
Barrel Extension Finish	Nitride

 

The Kratos Design Group Gas Block is CNC machined from precision ground 4140 steel bar stock. Featuring a .750 gas journal and a QPQ finish it is an incredibly robust low-profile gas block.

Several features throughout make the installation and maintenance easier.

• Located directly opposite the gas port hole is a small witness hole that you can use to verify proper alignment of the gas block over the barrel’s gas port. Jordan B. is responsible for providing Kratos Design Group with the idea for this hole. It’s a simple and effective way to visually confirm proper alignment.
• On the front of the gas block, there is a small hole that can be used to aid in the removal of the gas tube when needed for replacement or inspection. A 1/16″ punch can be used.
• Our gas block also features a built-in shelf to make drilling easier when pinning the gas block to the barrel. A ⅛” drill bit and ⅛” x ⅝” steel pin is recommended.
• Included are (3) 10-32 black oxide knurled set screws with a Rockwell hardness of C-45. We include an extra screw because they are easy to lose. Also in the package are (2) stainless steel gas tube coil pins.
  Set screw spacing: .420” Screw size: 10-32 (3/32” drive)
  Weight: 1.4oz

100% made in Texas from US-made steel.

 

Materials:

GAS BLOCK:

4140 Precision ground US steel. Heat treated and QPQ’d. Honed to 0.750″ID. Machined in TX.

SET SCREWS:

10-32 black oxide alloy steel knurled cup-point set screws.  Rockwell hardness of C-45. Allen key drive size: 3/32″. Made in the USA

GAS TUBE COIL PIN:

420 Stainless Steel coil pin. 550 pound breaking strength, Rockwell hardness of C46. Chamfered at both ends. Made in the USA

 

-Witness Hole to Verify Gas Port Alignment
-Machined Shelf for Pinning To Barrel
-Front of Gas Block Drilled For Gas Tube Removal
-4140 Steel
-QPQ & Heat Treated
-.750″ ID
– .420″ set screw spacing
-(3) Knurled Set Screws Included
-(2) Gas Tube Coil Pin Included
– Made in Texas
-Lifetime Warranty