Magpul Heat-Treated Castle Nut for AR15 / M4 Buffer Tubes (MAG817)

€7.95 *

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  • MAG817
Keeps the receiver extension and lower receiver end plate secured in place.
The Heat-Treated Castle Nut screws onto the AR15/M4 lower receiver extension (buffer tube) and... more
Product information "Magpul Heat-Treated Castle Nut for AR15 / M4 Buffer Tubes (MAG817)"

The Heat-Treated Castle Nut screws onto the AR15/M4 lower receiver extension (buffer tube) and keeps the receiver extension and lower receiver end plate secured in place.  The large notches allow for positive engagement with a castle nut wrench for proper installation and torque.  The smaller notches provide a location for the end user to stake the castle nut to prevent accidental loosening.

Finished in a Mil-spec manganese phosphate.

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