The Bersa B556 suppressor (Bersa part no. BS-10003) is a hard-use, full-auto rated rifle can built entirely from Inconel 718 and 17-4 stainless steel with a high-temperature Cerakote finish. Oversized baffles and a front end cap rated to 6mm stretch it past a standard 5.56 can, covering 5.56 NATO, .223 Rem, 6mm ARC, .243 Win, 6mm PRC and 6mm Creedmoor. It ships with a 1/2×28 direct thread mount and works with the industry-standard 1.375-24 HUB system. It weighs 15.2 ounces at 5.825 inches long. It fits an AR shooter who runs 5.56 today and wants room to move to a 6mm cartridge without a second suppressor.

Key Specifications

• Bersa lists 5.56 NATO, .223 Rem, 6mm ARC, .243 Win, 6mm PRC and 6mm Creedmoor for this can.
• It is full-auto rated, built for the heat and pressure of sustained fire.
• Materials are Inconel 718 and 17-4 stainless steel throughout.
• A 1/2×28 direct thread mount is included.
• It is compatible with the 1.375-24 HUB mounting system.
• Weight is 15.2 ounces.
• Length is 5.825 inches, compact on a carbine.
• Bersa reports 32 dB of reduction, about 132 dB SPL.
• The removable front end cap can be replaced if damaged without returning the whole can.
• The finish is black high-temperature Cerakote.

Frequently Asked Questions

Can I use the B556 on a 6mm rifle? Yes. Bersa rates the oversized baffles and front end cap to 6mm, covering 6mm ARC, .243 Win, 6mm PRC and 6mm Creedmoor as well as 5.56 NATO and .223 Rem.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

What mounting options does it have? It includes a 1/2×28 direct thread mount and is compatible with the industry-standard 1.375-24 HUB system.

Buy the Bersa B556 Suppressor

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Bersa‘s suppressors lineup and our Lubbock, Texas team will handle the transfer.