FN America .223 Rem/5.56 18" Rifle Barrel, Chrome Lined Black Phosphate - 36423
$279.99 at GunMag Warehouse · 11 stores
In stock
FN America .223 Rem/5.56 16" Mid-Length Barrel, Chrome Lined Black Phosphate - 36422
FN · Barrels
No ratings yetBest price
$279.99at 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
- Mid-length · Handguards
- Barrel length
- 16" · Handguards
Specifications
- Manufacturer
- FN
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Barrel length
- 16"
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| GunMag Warehouse Best price | $279.99checked Nov 13, 2026 | In stock | Buy at GunMag Warehouse | |
| AR15Discounts 5% off | $349.00checked Nov 12, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $349.00checked Nov 12, 2026 | Check store | Buy at Dirty Bird | |
| Classic Firearms | $349.00checked Nov 12, 2026 | Check store | Buy at Classic Firearms | |
| GrabAGun | $349.00Salechecked Nov 12, 2026 | Check store | Buy at GrabAGun | |
| Palmetto State Armory | $298.99not checked recently | Out of stock | Buy at Palmetto State Armory | |
| Brownells 17.76% off · ends Nov 15 · exclusions apply | $349.00checked Nov 13, 2026 | Out of stock | Buy at Brownells | |
| OpticsPlanet | $349.00Salechecked Nov 12, 2026 | Out of stock | Buy at OpticsPlanet | |
| MidwayUSA | $349.99checked Nov 13, 2026 | Out of stock | Buy at MidwayUSA |
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: $279.99 at GunMag Warehouse. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $349.00 | $349.00 | $349.00 |
| Brownells | $349.00 | $349.00 | $349.00 |
| Classic Firearms | $349.00 | $349.00 | $349.00 |
| Dirty Bird | $349.00 | $349.00 | $349.00 |
| GrabAGun | $349.00 | $349.00 | $349.00 |
| GunMag Warehouse | $279.99 | $279.99 | $279.99 |
| MidwayUSA | $349.99 | $349.00 | $349.99 |
| OpticsPlanet | $349.00 | $349.00 | $349.00 |
Since Sep 27, 2026.
About this part
The FN America .223 Rem/5.56 16" Mid-Length Barrel, Chrome Lined Black Phosphate - 36422 is a 16" 5.56 / .223 barrel from FN with a mid-length gas system. It's sold by 9 stores (1 in stock), from $279.99 to $349.99. The lowest in-stock price in the last 30 days was $279.99 at GunMag Warehouse.
From the manufacturer
FN AR-15 Hammer-Forged Barrels have a chrome-lined chamber and bore to help resist corrosion and provide heat erosion resistance. Their barrel is forged from Chrome Moly Vanadium steel and built for the .750" diameter gas block with 1/2x28" threaded muzzle. It has an M4-style feed ramp and barrel extension for consistent and reliable feeding. This barrel is chambered in 5.56 NATO with a 1:7" twist with a manganese phosphate finish.
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.
Similar barrels
14.5" CHF Government Carbine, 5.56X45mm 1:7 RH Twist
$269.99 at GunMag Warehouse · 8 stores
In stock
Stripped Brn-4 5.56x45 13.7" Medium Chrome Lined Barrel, Phosphate
$279.99 at Brownells
In stock Sale
Stripped Brn-4 5.56x45 14.5" Medium Chrome Lined Barrel Phosphate
$279.99 at Brownells
In stock Sale
Rock River Arms 10.5in CL 1-7 Full Auto Barrel Assembly Black
$279.99 at OpticsPlanet · 2 stores
In stock Sale
Rock River Arms 20in STD SS Barrel Assembly Stainless Steel
$279.99 at OpticsPlanet
In stock Sale