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FITS: M4 Post Ban 16" - RFA2-M4PMC, .223


AR-15, Issue:06, Page:095
Big Book Catalog, Issue:68, Page:605

DPMS - AR-15/M16 RECEIVER EXTENSION CASTLE NUT

F1000638 AR15 M4 REC EXT CASTLE NUT
231-000-232WB
AR-15/M16 M4 Receiver Extension Castle Nut
231000232AR-15/M16 M4 Receiver Extension Castle Nut

Mfr Part: F1000638

$3.99

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AR-15/M16 RECEIVER EXTENSION CASTLE NUT