FN America FN15 Competition Build Kit

Manufactured by FN America
SKU: 20-100476
MPN: 20-100476
Manufactured by FN America
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Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



Start the perfect AR-15 build off right with the FN15 Competition Build Kit from FN America. The AR experts at FN wanted to offer users the same quality as the FN15 Competition rifle, but with the options to select your own barrel, trigger, grip and stock. The FN15 Competition Kit comes complete with a billet upper and lower receiver made from 7075-T6 aluminum and anodized in FN's signature blue finish. The lower receiver is stripped, so the shooter can select any aftermarket parts kit to complete the build, giving you maximum options for customizability. A flat top upper receiver with an M-1913 MIL-STD rail comes standard with the Competition Build Kit. That rail extends the entire length of the top of the included Mega Arms 16-inch rail system, which also features M-LOK slots for additional accessory mounting.

  • Made from billet aluminum
  • Includes complete bolt carrier group
  • Carbine length gas tube included
  • Upper receiver comes with charging handle
  • Takedown and pivot pins not included

To simplify your built, the upper receiver is completed, coming with the bolt carrier group and bolt assembly. The bolt carrier group is nickel-boron (NiB) coated, which decreases the friction of metal on metal contact, and improves the longevity of the rifle. The Mega Arms handguard is designed to be free-floating, which keeps it from interfering the barrel during firing and aids accuracy. Unlike standard handguards which attach to the barrel nut, this M-LOK equipped handguard screws directly on to the upper receiver. Built into the lower receiver of the FN15 Competition Build Kit is another unique feature - an ambidextrous bolt release. Regular M4 pattern rifles can drop the bolt using the ping-pong paddle on the left side of the receiver, but the FN15 Competition lower is designed for ambidextrous use. Shooters can reach up from the magazine release with their index finger and hit the bolt release, sending the bolt forward and a new round in the chamber after a reload.

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.
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BrandFN America
Caliber MarkingMulti-Caliber
FinishHardcoat Anodized
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154

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