▼ 23% below avg
CMMG Mk4 AR-15, LR-308 Buffer Tube Lock Ring
Lowest Price
$6.99
MSRP
$12.89
Savings
46% off
In Stock at
13 Stores
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Castle Nut for Buffer Tubes
Fits AR-15
Matte black finish
Specifications
Brand
CMMG
Model
Receiver Extension Nut
Series
Castle Nut
MPN
55CA9CB
UPC
815835017426
Description
CMMG offers replacement components for the AR-15 that are made to strict military specifications. These high quality components will provide excellent fit and reliable function in your AR series rifle and are perfect for upgrading existing components or replacing worn or broken parts.
