FN America 5.56 Button Cut Rifle Length Government Barrel - 18”

Manufactured by FN America
SKU: 20-100042
MPN: 20-100042
Manufactured by FN America
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Please add to cart for sale price $199.99 $235.00

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Standard orders will be shipped within the same business day. FFL orders will ship within 2 business days or less as long as we have the information for the transfer destination. Priority shipping methods like Overnight Delivery, Air Delivery, 2nd Day Delivery, or 3 Day delivery do not include Saturday or Sunday as delivery days.



FN America’s 5.56x45mm AR-15 barrel is a high-quality upgrade to any AR build. The 18” barrel features M16 styling with mil-spec steel construction and a black manganese phosphate finish. The rifle length barrel has a chrome lined chamber and M4 style feed ramps compatible with 5.56x45mm and .223 Remington that help extend barrel life while providing consistent, reliable feeding while shooting. It is threaded in 1/2x28 with a 1:7 RH twist rate.

  • 18” barrel chambered in 5.56 / .223
  • Machined from mil-spec steel
  • Chrome lined chamber
  • M4 style feed ramps
  • Rifle length gas system
  • Threaded 1/2x28
  • Black Manganese Phosphate finish

FN America is a subsidiary of FN Herstal, a global company with a proud, long-standing heritage. They are committed to providing highest quality, dependable, innovative firearms. With an over 127-year history, Fabrique Nationale stands at the cutting-edge of commercial, law enforcement, and military weapons. Every one of FN America’s firearms are hand tested before leaving the factory to ensure reliability and make sure that the product you receive will work when you need it to.
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Barrel Coating
BrandFN America

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