FN America 5.56 Button Cut Mid-Length Government Barrel – 16”

Manufactured by FN America
SKU: 20-100041
MPN: 20-100041
Manufactured by FN America
(0) No Reviews yet

In Stock

NOTE: Limit 3 per household. Quantities exceeding 3 will not allow checkout.

Standard orders received before 4:00pm CST will ship out the same day. FFL orders will ship within 3 business days as long as we have the information for the transfer destination.



FN America’s 5.56x45mm AR-15 Barrel is a high-quality upgrade to any AR build. The 16” barrel features M16 styling with mil-spec steel construction and a black manganese phosphate finish. The mid-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 and has a 1:7 RH twist rate. 

Note: It is recommended that all FN America parts be installed by a qualified and trained gunsmith.

  • 16” barrel chambered in 5.56 / .223
  • Machined from mil-spec steel
  • Chrome lined chamber
  • M4 style feed ramps
  • Mid-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.
See More


Barrel CoatingManganese Phosphate
Barrel Length16
Barrel MaterialSteel
BrandFN America
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthMid-Length
Thread Pattern1/2 X 28
Twist Rate1:7

Ratings & Reviews

No reviews available

Be the first to Write a Review