One Horse launched the Sarge and Archie Express Retros on November 8, adding two Vietnam-era-inspired 5.56 NATO rifles to its lineup in collaboration with Atrius Development Group, AmmoLand reported. Both models ship with the Atrius Forced Reset Selector installed at the factory, and are available direct-to-consumer through the company's website until January 2027, when they transition to dealer shelves.

The Sarge takes the full-length M16 path: a 20-inch barrel of 4150 CrMoV chrome-lined steel with a 1:7-inch right-hand twist and rifle-length gas system, a fixed carry handle, and a triangular clamshell handguard that replicates early Vietnam-era M16 furniture. One Horse named the rifle to honor Don Morgan, an Army veteran from Brownstown, Indiana. The bolt carrier group uses an 8620 steel carrier and a 9310 MPI-inspected bolt. At 20 inches, the Sarge is the same profile as the original M16A1 — a configuration that has seen a resurgence among retro-build enthusiasts and collectors who want the period-correct geometry without sacrificing a modern trigger.

The Archie follows the compact CAR-15 pattern: an 11.5-inch SBR with a round carbine handguard, fixed carry handle, B5 Systems carbine stock, and carbine-length gas system. It is named for Carl's A-Gunner — a crewmate who went by Archie — connecting the shorter configuration to the crewmen who carried compact weapons in aircraft and armored vehicles during the conflict. As an SBR, the Archie ships as a completed NFA item and requires a Form 4 transfer; buyers should factor current wait times into their purchase plans.

Both models feature the Atrius Forced Reset Selector, which One Horse first offered as an option on its standard Express before making it a factory-installed feature. The FRS resets the trigger's sear engagement on the forward stroke, allowing the shooter to cycle the action faster than a standard mil-spec trigger without electronic components or external batteries. The addition of the FRS to Vietnam-era-styled receivers is part of a broader trend of builders pairing modernized fire control with legacy aesthetics.

One Horse has committed five percent of November 2026 gross sales from both Retro models to the Columbus Indiana Huey flying museum, which preserves and operates a Vietnam-era UH-1 helicopter. The company is also offering a 15 percent veteran discount through November 15. No MSRP for the Sarge or Archie has been published; the standard One Horse Express begins around $999.

Both models are expected to reach the dealer network in January 2027. One Horse has not disclosed production volumes or confirmed whether the Vietnam Retro series will become a permanent part of its catalog beyond the initial run.