Fall Build Fest Continues - 15% OFF GUN PARTS THIS WEEK
Use Code: PARTS15

Fall Build Fest Continues - 15% OFF GUN PARTS THIS WEEK
Use Code: PARTS15

AR-15 MBA-3/MBA-4 CARBINE CASTLE NUT

AR-15 MBA-3/MBA-4 CARBINE CASTLE NUT Reviews & Ratings

FITS: The Luth-AR Carbine Lock Ring/Castle Nut for MBA-3 and MBA-4 Carbine Buffer Kits, as well as any Mil-Spec or Commercial Carbine receiver extension.

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5
Nice!
This castle nut worked great. Tightened to 40 ft/lbs and everything is strait and tight. The groves for staking are nice and deep, which allow for strong staking. Don’t be concerned with the low price, this item good to go.
Would you recommend this? Yes, I would recommend to a friend
by Chris on May 29, 2025
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5
Great quality for little $
For the price I decided to purchase this as an emergency backup part. But the quality was so nice I decided to use it on my build. It's a nice part for a very little investment
by CHARLES M. on January 10, 2024
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