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Rosco Manufacturing K9 Sage Dynamics
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Rosco Manufacturing

K9 Sage Dynamics

$185.00
$171.00
Sale Price
Available California compliant

Rosco Manufacturing K9 Barrel, Sage Dynamics, Continuous Profile, 5.56 NATO, 12.5" Threaded Barrel, 1/2X28 Thread Pitch, 1:7 Barrel Twist, 416R Stainless Steel, Patrol-Length Gas System, Fits AR15, Nitride Finish, Black, Includes Patrol-Length Gas Tube K9-125-HY-SAGE-556-7-PT

Key Details
Brand Rosco Manufacturing
Manufacturer Part Number K9-125-HY-SAGE-556-7-PT
UPC 850039693069
SKU ROSK9-125HYSAGE5567PT
Current Stock 10 available
Quantity Updated Apr 26, 2026 1:05 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

The K9 12.5 features a proprietary patrol-length gas system that is smoother than a carbine length and more reliable than a mid-length. Because this is the optimal amount of gas, the barrel performs reliably whether suppressed or unsuppressed. The K9's continuous taper profile is a proven design from the past, ideal for dissipating heat during hard use. It also includes an updated target crown carried over from the Purebred series. This crown has no 90-degree cuts, which improves harmonics, fit, and finish. NOTE: COMES WITH PATROL LENGTH GAS TUBE.

Features
  • 5.56 NATO
  • Nitride Finish
  • 12.5, 1:7 Twist"
  • Patrol-Length Gas System
  • Threaded 1/2X28
Specifications
UPC: 850039693069
Manufacturer: Rosco Manufacturing
Manufacturer Part #: K9-125-HY-SAGE-556-7-PT
Model: K9 Sage Dynamics
Barrel Length: 12.5"
Finish: Nitride