Description
The Expo Arms AR-15 Barrels are designed to give you a premium barrel at an affordable cost. This AR barrel is made from 4150 CMV steel and features a chrome lined bore to withstand high temperatures for a long barrel life. This 14.5” model features an enhanced medium contour with a mid-length gas system and .077” port diameter for reliable function and softer recoil. Additionally, the .750 gas seat diameter is dimpled for securely attaching set screw gas blocks. The 1:7 twist rate is optimal for heavier 62 grain ammunition and the muzzle is threaded 1/2x28 for your favorite 5.56 muzzle device and is the perfect length for pinning and welding. If you are looking for a combat ready barrel that provides exceptional accuracy and reliability, you can’t go wrong with an Expo Arms M4 barrel.
Features:
- 14.5” Enhanced medium profile chambered in 5.56 NATO
- Mid-Length gas system with .077” port diameter
- .750” dimpled gas block shelf
- Made from 4150 CMV steel
- Phosphate finish
- Chrome-lined chamber and bore
- 1:7 twist rate and 1/2x28 muzzle thread
- M4 feed ramps
Expo Arms offers top-quality MIL-SPEC AR-15 components at rock bottom prices. Made in the U.S.A. and covered by Expo’s Limited Lifetime Warranty against manufacturer defects, material or workmanship problems, and even normal wear and tear.
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Specifications
Barrel Coating: Manganese Phosphate
Barrel Contour: Enhanced Medium
Barrel Length: 14.5
Barrel Lining: Chrome
Barrel Material: 41V50 Chrome Moly Vanadium Steel
Brand: Expo Arms
Caliber Gauge: 5.56 NATO
Feed Ramps: M4
Gas Seat Diameter: .750
Gas System Length: Mid-Length
Platform: AR-15
Thread Pattern: 1/2 X 28
Twist Rate: 1:7
MPN#: XP-EMC-556-145
