Ati Omni Hybrid Ar15 Stripped - Polymer Upper Receiver Green

The American Tactical Inc Omni Hybrid stripped upper receiver is a green polymer upper built for shooters assembling a lightweight AR-15 without paying forged-aluminum prices. This is a stripped component, meaning it ships ready for you to add your own barrel, handguard, and bolt carrier group. Weighing just 7 ounces, it trims meaningful weight off a build while keeping the standard mil-spec footprint. It accepts the same parts you'd bolt onto a forged upper, so it slots into custom rifle projects and budget builds without forcing you to source proprietary hardware. Builders working through our upper receiver options will find it one of the lightest in the catalog.

What separates this receiver from a basic plastic shell is the patented metal-reinforced polymer construction. American Tactical Inc molds metal inserts into the high-stress zones, the barrel nut threads and pivot pin lugs, where a pure polymer upper would otherwise fail under torque and recoil. The body itself is corrosion resistant and runs a flat-top, optics-ready profile that takes any 1913-pattern rail mount. Because it follows mil-spec dimensions, it's multi-caliber capable across 5.56mm NATO, .223 Remington, 300 Blackout, 6.8mm rounds, and rimfire .22 LR, depending on the barrel and bolt you pair with it. The receiver carries a Limited Lifetime Warranty and is manufactured in Summerville, South Carolina. It accepts standard barrels, handguards, and bolt carrier groups with no fitment workarounds.

This receiver makes sense for a lightweight range build, a truck gun, or a backup rifle where shaving ounces matters and you don't need a billet showpiece. It's also a sensible starting point for a first-time builder who wants forged-comparable durability at a lower entry cost. Pair it with the matching polymer lower and you've got a corrosion-resistant platform that handles wet conditions better than bare aluminum. We stock this upper in several colors, including the matching grey version, alongside a full range of forged and billet uppers if your build calls for a different material.