Description
The CMMG MK4 Receiver Extension Castle Nut is a castle nut for a receiver extension assembly, finished in matte black.
This CMMG component is identified for the MK4 series.
Sale!
CMMG MK4 Receiver Extension Castle Nut – Matte Black
Original price was: $7.19.$4.74Current price is: $4.74.
77 in stock
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