Brownells, Inc.

Brownells BRN-PROTO AR-15 Retro Rifle 5.56 NATO 20" 25 Rds BRN-601

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5.56 NATO
Manufacturer: Brownells, Inc.

Model:  BRN-PROTO® AR-15 Retro Rifle

Sku: BRN-601

Caliber: 5.56 NATO 

Capacity:  25 Rounds

Barrel Length:  20" 

Finish:  Anodized Matte Gray

Muzzle:  Duckbill 3-Prong Flash Hider

Twist Rate:  1:12"

Bolt Carrier Group:  Chrome M16

Charging Handle:  Trigger-Style

Sights:  Front Post and Adjustable Rear

Stock:  Brown Polymer

Pistol Grip:  Brownells M16A1 Brown Grip

Handguard: Ventilated Polymer with Internal Heatshield

Weight: 6 lbs 11 oz 

Overall Length: 40"

Step into the Wayback Machine and go back to the beginning of the AR-15 with our BRN-PROTO® - a faithful replica of the Eugene Stoner's very first AR-15 prototype. If you're an AR-15 aficionado or collector, the BRN-PROTO® is a rifle you should not be without! Based on AR-15 Serial Number One, the Brownells' BRN-PROTO® sports a wealth of unique, historically-accurate features you will not see on later AR-15 / M16 models.

First, the BRN-PROTO® has the distinctive trigger-like charging handle on top of the receiver, under the carry handle, just like the early AR-10 models (remember, the AR-15 was developed second.). It has the uncluttered “slick-side” upper receiver of the early rifles and stock, handguard, and pistol grip of brown reinforced polymer that replicates the look - but not the weaknesses - of the original fiberglass furniture. If the round cross-section handguard looks oversized, that's because it is. Just as the original was a "borrowed" AR-10 'guard, it's actually lifted from our BRN-10 .308 rifles!

The BRN-PROTO AR-15 gives you the looks and functionality of the original without the drawbacks. It is constructed of the latest materials using the latest manufacturing techniques, so you have an robust rifle that's ready to put a LOT of rounds down range. Internal dimensions conform to modern "mil-spec" standards, so the BRN-PROTO® is compatible with off-the-shelf upgrade and replacement parts.
  • Chambered for modern 5.56x45mm NATO (.223 Remington compatible) ammunition
  • Robust forged/machined 7075 T6 aluminum receivers
  • Rifle-length gas tube
  • Chrome-plated bolt / carrier group
Includes a reprint of "The M16A1 Rifle: Operation & Preventative Maintenance," the famous comic-book-style Army manual by cartoonist and graphic artist Will Eisner. First issued in 1969.

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