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  • Colt M4/AR15 Receiver Extension Castle Nut

    • Colt M4/AR15 Receiver Extension Castle Nut

    Colt

    $9.95
    (35 reviews) Write a Review
    SKU:
    9390020
    Previous Part Numbers:
    64069, 62357
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    Product Description

    Colt M4/AR15 Receiver Extension Castle Nut P/N: 9390020 Supersedes: 64069, 62357

    Factory Colt castle nut for the carbine receiver extension (buffer tube). Locks the extension and end plate to the lower receiver.

    Current Colt number is 9390020. Same nut previously sold as 64069 and 62357.

    Features

    • Genuine Colt factory castle nut
    • For M4 / AR-15 carbine receiver extensions
    • Secures the buffer tube and receiver end plate
    • Current P/N 9390020
    • Replaces 64069 and 62357
    • Sold individually

    Specs

    • Manufacturer: Colt
    • Current part number: 9390020
    • Old part numbers: 64069, 62357
    • Type: Receiver extension castle nut
    • Platform: M4, AR-15 carbine
    • Fit: Standard carbine receiver extension

    This is the castle nut only. Receiver extension, end plate, and stock are sold separately.

    Product Videos

    Custom Field

    Previous Part Numbers 64069, 62357

    Product Reviews

    Write a Review

    35 Reviews Hide Reviews Show Reviews

    • 5
      Keep it Colt

      Posted by John on 2nd Oct 2022

      ArmsUnlimited is my go-to for Colt parts. Working on an M4 clone I needed the Milspec Colt 4 position receiver extension. Armsunlimited was out of stock so I signed up for a notification.. Within days I get a notification in my email that the item was in stock . I ordered it immediately along with a Colt castle nut (had an endplate) and I had it within a few days. All in all, I have used these guys a number of times and it’s always a fair price (no gouging), fast shipping, and all the rest that goes along with great service.

    • 5
      Colt parts

      Posted by Michael Gibbs on 29th Jul 2022

      Colt is good! But once again arms unlimited with their pricing, inventory, and customer service is great!

    • 5
      Perfect

      Posted by Jonathan Dunn on 19th Aug 2021

      Simple and dead-nut dependable.

    • 5
      Great pricing

      Posted by Reuben Oaks on 26th Dec 2020

      Colt quality...

    • 4
      It works

      Posted by Unknown on 6th Dec 2020

      In my experience Colt castle nuts are consistent and work well.

    • 5
      Colt Parts

      Posted by William Mason on 20th Sep 2020

      I prefer Colt parts, AU is a reliable source with good inventory, price, and fast shipping. They already had my business, and have worked to keep it.

    • 5
      Castle nut

      Posted by David G on 1st Sep 2020

      Colt is legit. Great parts to have on standby.

    • 5
      Original Colt parts are hard to find for AR's.

      Posted by Rob on 25th Jun 2020

      Parts were what I was looking for. They were perfect.

    • 5
      Colt Castle Nut

      Posted by Unknown on 30th May 2020

      Great experience buying this. I'm going to buy another.

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