Machined from 4140 steel with a manganese phosphate coating, the Castle Nut is an excellent replacement part or is ideal when building new rifles. Locks your CAR buffer tube down secure.
Great fit easy to install, looks great on my PAK 9.
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Tyson Young from Lake Jackson, TX United States
May 8, 2025
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Mark B from Jacksonville, FL United States
October 23, 2024
Excellent product, outstanding support
I went through a few permutations of the folding stocks available from CSS. To their great credit they patiently counseled me and in the end I wound up with an outstanding collapsible stock that fits my shorter than average arms perfectly.
