BRN-180® Gen3 — The Evolution of a Modern Classic

The BRN-180® Gen3 upper receiver brings the trusted reliability of the original design into a new era—with enhanced ergonomics, greater durability, and field-ready features developed directly from user feedback. Everything that made the BRN-180 a favorite—its short-stroke gas piston system, bufferless design, and rugged construction—is still here. What’s changed is how refined and easy it is to use.

Built from Experience. Upgraded by Demand.

From thousands of rounds fired at the range to insights from dedicated users, the Gen3 was forged in the real world. One of the biggest updates? The charging handle. It’s now non-reciprocating and located on the left side of the receiver—allowing for faster manipulation and keeping your support hand clear from reciprocating mass. The slot is sealed with a flexible gasket to block out dirt and debris without sacrificing movement.

The gas system is even easier to adjust—just flip the selector through the handguard with your fingers. No tools, no downtime. Choose from multiple gas positions for suppressed, unsuppressed, and adverse conditions (with four settings available on 300BLK variants).

You’ll also notice a more rigid handguard attachment that eliminates flex, an automatic ejection port cover that cycles with the bolt, and a new recoil system retention feature that keeps everything contained when you open up the upper. Better springs, a steel cam path for longevity, and additional QD sling points round out the improvements.

Gen3 BRN-180 Key Features:

• Non-Reciprocating Left-Side Charging Handle: Positioned for better ergonomics, with a sealed slot to keep the action clean.

• Ergonomic Charging Handle Design: Angled downward for easier access around optics and smoother bolt manipulation.

• "Auto-Sealing" Ejection Port Cover: Eliminates the need to manually flip it—opens with the carrier and closes automatically.

• Quick-Select Gas System: Flip between suppressed, normal, and adverse settings (plus a fourth for 300BLK). No tools needed.

• Flat-Wire Recoil Springs & Retention System: More reliable cycling under fouled conditions, and no surprise disassembly.

• Anti-Bounce Bolt Carrier: Keeps the bolt fully in battery to prevent light primer strikes, even during fast fire.

• Steel Cam Path Insert: Reduces wear and extends the life of the receiver during heavy use—especially with suppressors.

• Extended Handguard Interface: Increased contact at the barrel nut for reduced flex and rock-solid accessory mounting.

• QD Sling Sockets (Steel-Backed): Added ambi QD points at the rear of the handguard with reinforced steel inserts.

• Cleaner Muzzle Fitment: A revised shoulder behind the muzzle threads ensures a flush, professional look with common muzzle devices.

Everything You Loved, and More

The Gen3 doesn’t replace the Gen1 or Gen2—it builds on them. If you already own an earlier model, you’ve got a rock-solid performer. But if you’re ready for a version that delivers even better handling, cleaner function, and smarter upgrades, the BRN-180 Gen3 is made for you.