Brownells New BRN-180SH Upper optimized for use with suppressors

Brownells introduced the BRN-180SH Full Top, the latest addition to the popular BRN-180 line, and announced it at the IWA Outdoor Classics show in Nuremberg, Germany.

Chambered in 300 Blackout, the BRN-180SH has a 10.5” barrel with 5/8-24 muzzle threads and a gas system with three settings: non-suppressed, suppressed, and off.

The BRN-180SH retails for $999.

With the gas system fully shut down, the top converts to “single shot” mode, virtually eliminating the sound produced by gases escaping through the ejection port or bolt carrier group cycling.

When fired with a suppressor attached and the gas system turned off, the BRN-180SH in single shot is even quieter than a BRN-180S.

The BRN-180SH comes with an adjustable charging handle that can be rotated down to help transform the top into a straight-pull action, allowing for fast follow-up shots when set up for the quietest possible operation.

The top can be quickly converted back to unsuppressed shot with a simple twist of the gas adjustment and flipping the charging lever back to its up position.

Like the rest of the BRN-180 line of uppers, the BRN-180SH fits over any standard AR-15 or BRN-180 soft top and requires no protective tube mounting. It works easily with a folding stock, or without a stock at all.

To view the new BRN-180SH and the rest of the BRN-180 line of uppers, lowers and parts, visit

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