Faxon Firearms Duty Series Barreled AR-15 Upper Receiver - 5.56 - 16"
Details
The Faxon Firearms Duty Series Barreled AR-15 Upper Receiver in 16" pairs a Gunner-profile barrel with a fixed low-profile gas block and A2 flash hider, giving mil-spec-lower builders a complete, competition-capable foundation.
Features:
- 16" Gunner-profile barrel chambered in 5.56 NATO
- Mid-length gas system with stainless steel gas tube
- Low-profile fixed gas block
- 1/2x28 threaded muzzle with A2 flash hider
- 15" Faxon Streamline free-float M-LOK handguard
- Faxon Enhanced Forged AR-15 upper receiver
- Bolt carrier group and charging handle not included
The Gunner barrel profile balances front-end weight against rigidity for a rifle that handles quickly without giving up stiffness, and the mid-length gas system keeps recoil manageable for a 16" general-purpose build. Leaving out the BCG and charging handle lets you select your own to finish a precisely tailored build, and this upper is compatible with any mil-spec AR-15 lower.
Faxon builds this upper in the United States for sport shooters who want a competitive edge without compromising reliability, and the 15" Streamline handguard keeps the profile slim for fast handling.
The stainless steel gas tube resists corrosion better than a standard steel tube, and the enhanced forged upper receiver is built for durability under sustained use.
Faxon Firearms manufactures and assembles every barrel in-house at its Cincinnati, Ohio facility, keeping quality control in-house from rifling through final inspection.


