Expand the modularity of your suppressor with the most popular mounting system. Swap your direct-thread fixed mount to the KeyMo adapter for a faster and more repeatable attachment method. The KeyMo Adapters are compatible with any of our KeyMo and Key Micro muzzle brakes or flash hiders. KeyMo HUB Adapter (DA428): Dead Air KeyMo Adapter for HUB Socket Silencers (1 3/8-24) like our Nomad Series, Primal, Sierra-5 and many others. Product Specifications Material: 17-4 Stainless Steel Overall Length: DA428 : 1.670" Mount: Keymount Brake, Flash Hider Weight: 4.30 oz - HUB Adapter: Nomad/Omega Mount 4.60 oz