Brownells Reintroduces the BRN-601

The BRN-601 Complete Upper Receiver is back. Ideal for retro builds the BRN-601 is styled after the original Colt 601 which features the classic ‘duckbill’ flash hider, a 20″ lightweight 1-12 twist barrel, a classic triangular charging handle, green polymer handguards which mimic the originals and the receiver is anodized matte grey. The complete BRN-601 upper is available for $899.99 MSRP.

Brownells @ TFB:

Brownells Reintroduces the BRN-601 (Brownells)

Here’s what Brownells have to say about the BRN-601:

Brownells is excited to announce the reintroduction of the BRN-601 Retro Upper Receiver. The BRN-601 addresses the long-standing challenges faced by retro AR-15 enthusiasts in their quest for authentic, often scarce components.

The BRN-601 is a detail-accurate replica of the upper receiver on the first AR-15 type rifle adopted in the early 1960s. It features the correct “slickside” receiver, fine-quality matte gray anodized finish, a 20″ 5.56x45mm NATO barrel with a 1-12″ twist and chrome-lined bore, chromed slickside M16 bolt-carrier group with a robust 9310 steel alloy bolt, and the distinctive original three prong “duckbill” flash hider.

Combining nostalgia for the early history of the AR-15 rifle with cutting-edge technology, the BRN-601 provides a solution to the problems of availability, affordability, and modern features that have plagued the market for retro AR-15 components.

“We are thrilled to bring back this retro offering to the market,” said Paul Levy, Director of Product Management. “Our team has worked hard to ensure the BRN-601 meets the highest standards of quality and performance. We believe it will be a big hit with retro enthusiasts and anyone looking for a high-quality, reliable upper assembly.”

The BRN-601 Retro Upper Receiver is available now from Brownells. For more information, visit

430105691 BRN-601® RETRO COMPLETE UPPER RECEIVER $899.99 retail

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