Colt M4/AR15 Receiver Extension Castle Nut

Colt M4/AR15 Receiver Extension Castle Nut

Colt
SKU:
9390020
$9.95
(35 reviews)
Current Stock:
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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.

Additional Information
Previous Part Numbers:
64069, 62357
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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.