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to provide a fast, secure, and enjoyable experience. by LR-Shooters, from AL, United States Asked on April 10, 2019
It is steel.
Mine came with an aluminum one and it requires to be indexed. Not sure why, because most of the ones i have seen in videos have a non index barrel nut type. I rather not have to index the nut. I had to order some shims to get the right alignment and torque.