The Faxon Duty Series 16" Gunner Profile Mid-Length 5.56 NATO Barrel is the barrel most builders should start with — and for most, it’s the one they’ll finish with. It combines the right gas system for a 16" build, a profile that cuts weight without sacrificing stiffness, and the steel, finish, and process standards that have earned Faxon multiple Gold Awards from Shooting Sports Retailer and Tactical Retailer magazines. This is a workhorse for a general-purpose carbine, a training rifle, a home defense build, or any 16" setup where you want proven performance without overpaying for a specialty series.
The Gunner profile is Faxon’s most popular contour for good reason. It blends the rigidity of a Government-style barrel with the weight savings of a Pencil, tapering along the barrel’s length to remove mass where it isn’t contributing to stiffness or heat capacity. For a 16" rifle you’ll carry, train with, or compete with, that balance is exactly right. Not sure which profile, series, or gas length fits your build? Faxon’s complete 5.56 barrel guide covers every variable — use case by use case — so you can make a confident call before you buy.
Mid-length gas is the right choice at 16". The port is positioned to keep pressure lower at the bolt carrier than carbine-length gas would — which means a softer, more linear recoil impulse, less wear on the bolt and buffer system over thousands of rounds, and noticeably better behavior when a suppressor is in the equation. It’s a better-engineered system for this barrel length, and Faxon holds the gas port location to a tight positional tolerance on the engineering drawing to ensure every barrel leaves the shop consistent.