Brownells BRN-15 13.70" Railed Upper 5.56x45mm 1:7 Mid-Length no BCG&CH, Black

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Brownells BRN-15 13.70" Railed Upper 5.56x45mm 1:7 Mid-Length no BCG&CH, Black - Upper Receiver for AR-15 - view 1
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Overview

The Brownells BRN-15 13.70" Railed Upper is a complete upper receiver designed for the AR-15 platform, featuring a mid-length gas system that enhances reliability and reduces recoil. With a 13.7-inch barrel chambered in 5.56 NATO and a 1:7 twist rate, it provides excellent stabilization for a variety of bullet weights, making it versatile for different shooting applications. This upper is commonly found in builds aimed at achieving a compact yet effective configuration for tactical or competition purposes.

Specifications

MPN4027-3410-B3
Barrel Length13.7
Twist Rate1:7
Caliber5.56 NATO
Gas System LengthMid-Length
PlatformAR-15
ColorBlack
AssemblyComplete

Available Merchants(1)

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$320

Build history on GunPartPicker

Builders on GunPartPicker first added the Brownells BRN-15 13.70" Railed Upper 5.56x45mm 1:7 Mid-Length no BCG&CH, Black to a build in August 2026.

Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $319.99, so there haven't been real sales lately. Buying today, the lowest price is $319.99 at Brownells, which matches the best price we saw in September.

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