Button Rifled AR-15 M16 Barrel 10.5 Carbine 5.56mm
$250.70 at Kentucky Gun Co · 11 stores
In stock
Best price
$269.99at GunMag Warehouse
In stock Lowest in 30 dayschecked Nov 13, 2026
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
- Carbine · Handguards
Specifications
- Manufacturer
- FN America
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Gas system
- Carbine
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| GunMag Warehouse Best price | $269.99checked Nov 13, 2026 | In stock | Buy at GunMag Warehouse | |
| Kentucky Gun Co | $298.95checked Nov 13, 2026 | In stock | Buy at Kentucky Gun Co | |
| OpticsPlanet | $349.00checked Nov 13, 2026 | In stock | Buy at OpticsPlanet | |
| Ammunition Depot | $349.00checked Nov 13, 2026 | In stock | Buy at Ammunition Depot | |
| AR15Discounts 5% off | $349.00checked Nov 13, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $349.00checked Nov 13, 2026 | Check store | Buy at Dirty Bird | |
| Palmetto State Armory | $349.99Salechecked Nov 13, 2026 | Check store | Buy at Palmetto State Armory | |
| GrabAGun | $349.99Salechecked Nov 13, 2026 | Check store | Buy at GrabAGun | |
| Brownells 17.76% off · ends Nov 15 · exclusions apply | $349.99checked Nov 13, 2026 | Out of stock | Buy at Brownells |
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: $269.99 at GunMag Warehouse. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $349.00 | $349.00 | $349.00 |
| Ammunition Depot | $349.00 | $349.00 | $349.00 |
| Brownells | $349.99 | $349.99 | $349.99 |
| Dirty Bird | $349.00 | $349.00 | $349.00 |
| GrabAGun | $349.99 | $349.99 | $349.99 |
| GunMag Warehouse | $269.99 | $269.99 | $269.99 |
| Kentucky Gun Co | $298.95 | $298.95 | $298.95 |
| OpticsPlanet | $349.00 | $349.00 | $349.00 |
| Palmetto State Armory | $349.99 | $349.99 | $349.99 |
Since Sep 28, 2026.
About this part
The Hammer Forged AR-15 Hf M4 Barrel 16 Carbine 5.56mm is a 5.56 / .223 barrel from FN America with a carbine gas system. It's sold by 9 stores (4 in stock), from $269.99 to $349.99. The lowest in-stock price in the last 30 days was $269.99 at GunMag Warehouse.
From the manufacturer
FN America builds the battle-ready machine guns that U.S. military forces depend upon around the world, and they've been building combat-proven platforms for more than 100 years. Now, you can benefit from the company's expertise and manufacturing prowess by getting your hands on one of its hammer-forged M4 carbine barrels. The use of cold-hammer-forging instead of button-rifling in these FN M4 carbine barrels means that they have a level of durability that's unsurpassed in any other barrel design. These barrels are designed to take the punishment of fully automatic fire without skipping a beat, so they'll handle whatever you can throw at them. Each barrel is treated w Mfg: Fn America
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