The Canik VOID-556 suppressor is a full-length 5.56 rifle can from Canik’s VOID line, developed with Otter Creek Labs (Canik part no. CASU0002). It is built from heat-treated 17-4 stainless steel and finished in high-temperature Cerakote, a combination aimed at hard use rather than minimum weight. An included 1/2×28 direct-thread adapter gets it onto a common 5.56 barrel, and the 1.375×24 HUB rear interface keeps other mounts in play. Canik also packs a solid end cap and a low back pressure end cap, so the owner can choose between more suppression and less blowback. It suits AR-pattern rifles used for range work, precision shooting or hard-use semi-auto setups.

Key Specifications

• The caliber rating is 5.56x45mm, with Canik listing a minimum barrel length of 7.5 inches for that cartridge.
• Canik also rates it for 6mm ARC and similar cartridges on barrels of 10.5 inches or longer.
• Overall length is 6.1 inches, the full-length VOID-556 size.
• Diameter is 1.625 inches, which sets clearance next to the handguard and optic.
• Weight is 14.9 ounces, reasonable for a steel rifle can.
• Material is heat-treated 17-4 stainless steel, chosen for strength under sustained fire.
• The finish is black high-temperature Cerakote, which protects the steel against heat and wear.
• The included adapter is a 1/2×28 direct thread, the common thread on 5.56 barrels.
• The mounting interface is HUB compatible at 1.375×24, so other HUB adapters fit.
• Two end caps come in the box, a solid end cap and a low back pressure end cap.

Frequently Asked Questions

What is the minimum barrel length? Canik lists 7.5 inches for 5.56x45mm and 10.5 inches for 6mm ARC and similar cartridges.

Which end cap should I run? Canik includes a solid end cap and a low back pressure end cap, so you can set the can up for the most sound suppression or for less gas blowback.

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.

Buy the Canik VOID-556 Suppressor, 5.56, 1/2×28

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 Canik‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer and it ships fast to your Class 3 dealer. The full-length VOID-556 is the pick when sound matters more than the last inch of length.