AR-15 Mba-3/Mba-4 Carbine Castle Nut Black Steel
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specifications

Manufacturer:

Luth-Ar LLC

Color:

Black

Platform:

AR-15

    AR-15 Mba-3/Mba-4 Carbine Castle Nut Black Steel

    Caliber Manufacturer Color Weight Merchant Price Merchant URL
    None Luth-Ar LLC Black None None $5.19 Brownells Add

    Prices last checked September 2026. Prices and availability change often, so confirm on the retailer's site.

    The Luth-AR Carbine Lock Ring/Castle Nut for MBA-3 and MBA-4 Carbine Buffer Kits Only.

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