The Canik VOID-556K compact suppressor is the short version of Canik’s 5.56 can, developed with Otter Creek Labs (Canik part no. CASU0003). At 5.1 inches and 12.3 ounces it is a full inch shorter and noticeably lighter than the standard VOID-556, which makes a difference on a short-barreled AR. Construction is heat-treated 17-4 stainless steel under a high-temperature Cerakote finish. A 1/2×28 direct-thread adapter is included, and the 1.375×24 HUB rear interface accepts other mounts. Owners who want less length out front on a carbine or AR pistol will see the point of the K.

Key Specifications

• Overall length is 5.1 inches, a full inch shorter than the standard VOID-556.
• Weight is 12.3 ounces, lighter than the 14.9-ounce full-length model.
• The caliber rating is 5.56x45mm, with a 7.5-inch minimum barrel length from Canik.
• Canik also rates it for 6mm ARC and similar cartridges on barrels of 10.5 inches or longer.
• Diameter is 1.625 inches, the same as the full-length can.
• Material is heat-treated 17-4 stainless steel, built for hard use.
• The finish is black high-temperature Cerakote, which protects the steel from heat.
• The included adapter is a 1/2×28 direct thread, the common 5.56 muzzle thread.
• The mounting interface is HUB compatible at 1.375×24, so other HUB mounts fit.
• Two end caps are included, a solid end cap and a low back pressure end cap.

Frequently Asked Questions

How is the VOID-556K different from the VOID-556? The K is the compact version at 5.1 inches and 12.3 ounces, compared with 6.1 inches and 14.9 ounces for the standard VOID-556.

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.

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.

Buy the Canik VOID-556K Compact 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. If your rifle already feels long, the K is the VOID to choose.