The CMMG ZEROED 46K suppressor is the shortened version of CMMG’s ZEROED 46 line, made to quiet .45 caliber and smaller centerfire rifles, pistol caliber carbines and PDWs (CMMG part no. 11DB026). CMMG builds it to the same durability standard as the standard-length ZEROED 46 while trimming weight and overall length. It is machined from heat-treated 17-4 stainless steel, finished in nitride and rated for full-auto fire. Two direct thread HUB mounts come in the box, and the 1.375-24 HUB pattern accepts any maker’s HUB mounts later. On a compact host where every inch counts, it keeps a carbine or PDW short and handy.

Key Specifications

• The caliber rating covers .45 caliber and smaller centerfire firearms, so one can serves rifles, pistol caliber carbines and PDWs.
• Overall length is 5.5 inches with the mount and 5.2 inches without it, which keeps a short host short.
• Weight is 15.3 ounces with the mount and 13 ounces without it.
• Body diameter is 1.58 inches, so check clearance under your handguard and optic.
• Construction is heat-treated 17-4 stainless steel in a tubeless, laser-welded baffle design.
• The finish is nitride, a surface-hardening treatment that resists corrosion and cleans up with nearly any solvent or an ultrasonic cleaner.
• It is full-auto rated, and CMMG notes approximately 240 rounds between cooldown periods.
• Two mounts are included: one 1/2-28 and one 5/8-24 direct thread HUB mount, covering the two most common muzzle threads.
• The body is 1.375-24 HUB compatible, so any manufacturer’s HUB-pattern mount can be fitted later.
• Service takes common tools, since the mounts have 7/8-inch wrench flats and the non-removable front cap accepts a standard 1/2-inch square drive ratchet or breaker bar.

Frequently Asked Questions

Which calibers does CMMG list for the ZEROED 46K? CMMG lists .22 ARC, .300 BLK, .308 Win, .338 ARC, .350 Legend, .40 S&W, .45 ACP, 4.6x30mm, 5.56x45mm, 5.7x28mm, 6.5 Creedmoor, 6.5 Grendel, 7.62x39mm, 8.6 BLK, 9mm and 10mm.

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.

How does the 46K differ from the standard ZEROED 46? It is the shortened version. CMMG holds it to the same durability standard as the standard-length 46 while giving up some weight and overall length, and it keeps the 1.375-24 HUB pattern.

Buy the CMMG ZEROED 46K Direct Thread Suppressor, 5.5-Inch

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 CMMG‘s silencers and suppressors lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.