Colt

Colt M4/AR15 Receiver Extension Castle Nut

Name: Colt M4/AR15 Receiver Extension Castle Nut
Brand: Colt
SKU: 9390020
Price: 9.95 USD
Availability: InStock
Rating: 5 (35 reviews)

(35 reviews) Write a Review

SKU:: 9390020
UPC:
MPN:

$9.95

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Description
Additional Information

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.

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Additional Information

Previous Part Numbers:

64069, 62357

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35 Reviews

35 Reviews

5
Great replacement

Posted by Pedro Suarez on 5th May 2020

If your building a new build or replacing an old existing part, look no further, this is what you need.
5
Colt castle nut

Posted by Charles E. on 26th Aug 2019

Quality part; fit and finish is perfect. Colt's has the notches for proper staking of the end plate. As always, great AU service!
5
Colt Receiver Extension Castle Nut

Posted by Michael Wiseman on 2nd Apr 2019

My Colt castle nut was shipped fast and is typical Colt quality. AU is my go to for Colt products.
5
Colt quality, great price

Posted by Mark on 13th Mar 2019

High quality mil-spec part. A.U. Great company.
5
First Purchase

Posted by Randy Ciuros on 5th Jan 2019

I needed an extra castle nut, preferably Colt brand, and Arms Unlimited had it at the best price, with free shipping to boot.
5
Colt Parts

Posted by Thomas R Griffith on 25th Dec 2018

Always top notch parts, AU always efficient with fast service.
5
Colt M4/AR15 Receiver Extension Castle Nut

Posted by Marty on 19th Nov 2018

AU sells authentic Colt parts and the Colt M4 Receiver Extension Castle nut is no exception. Castle nut was brand new. The exceptional things about AU are their customer service, best prices on Colt products, fast shipping and no tax!
5
More Colt parts.

Posted by Eric McKeown on 10th Jul 2018

Nice to be able to buy individual lower parts with free shipping.
5
Great for a AR build

Posted by Ed W on 9th Jul 2018

I order this castle nut along with a Colts lower parts kit to complete a Colt lower receiver build that I'm working on. Fast shipping and good price from Armsunlimited.
5
Exactly what I needed

Posted by Garrett Schmidt on 11th May 2018

Fast shipping, product was perfect.