The Echo Zulu Castle Nut is designed for quick and safe staking of AR castle nuts, with a patent pending design for enhanced performance.
Made from 4140 PH alloy steel and finished with black nitride, it offers durability and meets or exceeds mil-spec TDP with precision machining.
Features eight co-linear wrench & staking notches for easy alignment and multiple staking locations, compatible with the Echo Zulu Starter Kit and armorer's wrench.