The Dead Air KeyMo Zero Mount in 5/8-24 (brand part no. DA321) puts the quick-detach KeyMo interface on a 5/8-24 barrel in the smallest package Dead Air offers. Its through bore is .458, so it is the Zero to choose for big-bore hosts rather than the 9mm/.357 versions. The short body decreases entry into the blast chamber, which maximizes sound performance and trims weight. A suppressor removes cleanly without carbon-locking on the mount, so a hard-shooting rifle does not turn tear-down into a chore.

Key Specifications

• The thread pitch is 5/8-24, so match it to your barrel before ordering.
• The through bore is .458, sized to clear the bullet for that thread option.
• Overall length is just 1.385 inches, a short mount that keeps weight and length low.
• Weight is 2.1 ounces for this thread pitch, light enough that it hardly changes how the rifle carries.
• The outside diameter is 1.08 inches, slim enough to stay out of the way on the muzzle.
• It is machined from 4140 heat-treated chromium-molybdenum steel, a strong, durable alloy.
• The finish is black nitride, resisting wear and corrosion.
• The tool features are a 3/4 wrench and socket feature, so installation takes a common tool.
• It works with all Dead Air KeyMo and KeyMicro adapter-equipped silencers, so it joins the same quick-detach family.

Frequently Asked Questions

What is the bore size on the 5/8-24 KeyMo Zero? Dead Air lists the 5/8-24 version with a .458 through bore.

Will this mount fit my KeyMo suppressor? Dead Air states the KeyMo Zero is compatible with all Dead Air KeyMo and KeyMicro adapter-equipped silencers.

Does the suppressor stick on it after shooting? Dead Air designs the KeyMo Zero so the suppressor can be removed without carbon-locking onto the mount.

Buy the Dead Air KeyMo Zero Mount, 5/8-24, .458 Bore

Match the thread and the bore and this is a simple, dependable way to make a rifle suppressor-ready. Add it with other Class 3 parts and accessories from our Lubbock, Texas gun shop and order for fast, direct shipping.