Rosco Manufacturing K9 16in Barrel & Hatchet 5.56 NATO Barrel Black
$185.21 at Kentucky Gun Co · 4 stores
In stock
Best price
$184.50at MidwayUSA
In stock checked Oct 21, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| MidwayUSA Best price | $184.50checked Oct 21, 2026 | In stock | Buy at MidwayUSA | |
| Brownells | $153.00checked Oct 21, 2026 | Out of stock | Buy at Brownells | |
| OpticsPlanet | $153.00Salechecked Oct 21, 2026 | Out of stock | Buy at OpticsPlanet | |
| Kentucky Gun Co | $171.00checked Oct 21, 2026 | Out of stock | Buy at Kentucky Gun Co |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $184.50 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $153.00 | $153.00 | $153.00 |
| Kentucky Gun Co | $171.00 | $171.00 | $171.00 |
| MidwayUSA | $184.50 | $184.50 | $184.50 |
| OpticsPlanet | $153.00 | $153.00 | $153.00 |
Since Sep 28, 2026.
About this part
The K9 12.5" Patrol Length Barrel 1-7tw 1/2-28 5.56mm is a 12.5" 5.56 / .223 barrel from Rosco Manufacturing with a mid-length gas system. It's sold by 4 stores (1 in stock), from $153.00 to $184.50. The lowest in-stock price in the last 30 days was $184.50 at MidwayUSA.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Gas system
- Mid-length · Handguards
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 12.5" · Handguards
Specifications
- Manufacturer
- Rosco Manufacturing
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Gas system
- Mid
- Barrel length
- 12.5"
- Thread pattern
- ½ x 28
From the manufacturer
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 h Mfg: Rosco Manufacturing
Similar barrels
Rosco Manufacturing Husky AR-15 5.56x45mm NATO Threaded AR Barrel Phosphate/Chrome Black 12.5in
$185.40 at Ammunition Depot · 4 stores
In stock
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