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Strike Industries AR Enhanced Castle Nut and Extended End Plate Up to $3.00 Off w/ Free Shipping — 4 models

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Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Blue, SI-AR-ECN&EEP-BLU
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Blue, SI-AR-ECN&EEP-BLU
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
1 of 1 videos
Strike Industries AR Enhanced Castle Nut & Extended End Plate Installlation
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
1 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
2 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
3 of 23 images
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Blue, SI-AR-ECN&EEP-BLU
4 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Blue, SI-AR-ECN&EEP-BLU
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
5 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
6 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
7 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
8 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
9 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
10 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
11 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
12 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
13 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
14 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Red, SI-AR-ECN&EEP-RED
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
15 of 23 images
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
16 of 23 images
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
17 of 23 images
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
18 of 23 images
Strike Industries AR QD Enhanced Castle Nut and Extended End Plate, Fde, SI-AR-ECN&EEP-FDE
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Blue, SI-AR-ECN&EEP-BLU
19 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Blue, SI-AR-ECN&EEP-BLU
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
20 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
21 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
22 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK
23 of 23 images
Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate, Black, SI-AR-ECN&EEP-BK

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Questions & Answers
Anyone know what the set screw size is? I lost mine since I didn't Loctite it and it fell out while shooting. Expert Answer

Unfortunately we do not have the set screw size, you would have to contact the manufacturer for that part. You can reach them here: https://www.strikeindustries.com/shop/product-tech-support

by Ethan C., Gear Expert, May 8, 2019
See 3 More Answers
Will this fit AR10 platform? Expert Answer

Yes, the Strike Industries AR Enhanced Castle Nut and Extended End Plate is compatible with AR10/DPMS pattern rifles as well as AR15 pattern rifles.

by Ethan, Gear Expert, October 30, 2024
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Perfect addition for a Ruger SFAR by LFOD1776, Verified Owner, November 6, 2024
If you want to replace the plastic factory end plate on the Ruger SFAR, this one extends far enough to accommodate the beavertail on many aftermarket AR grips (e.g., Ergo, Magpul), but also doesn't stop full retraction of a milspec buttstock.
1/2 found this helpful
Helpful Positive Review
My thoughts on the Strike Industries Enhanced Castle Nut and Extend Plate all good. by Kevin, June 19, 2021
Looks great, easy to install, and works well with the quick detach sling. Also if you don't like the castle nut but want the extended end plate it works with a regular castle nut. Same for if you like the castle nut but want to keep your existing end...
Read More...
2/2 found this helpful
Helpful Positive Review
Strike Industries Castle Nut w/ Extended QD Endplate by Irish, August 12, 2017
This is a fantastic product to add flash to your AR. It was very easy to install, and can be tightened down with a normal armorers wrench. The QD endplate allows for easy QD sling attachment right below the buffer tube extension. Additionally, the QD...
Read More...
11/12 found this helpful
Helpful Positive Review
Best endplate, dumb nut. by Ur Mum, Verified Owner, December 14, 2022
This and their more expensive version with the steel QD tube are the best endplates for the AR, IMO. Having a sling QD abrading your thumb web gets annoying pretty quick and these extended end plates are the perfect answer. I put these on all my buil...
Read More...
4/4 found this helpful
Helpful Positive Review
Missing Piece by Chris G, Verified Owner, July 13, 2021
I had been looking for the Strike Industries Enhanced Castle nut to finish my build and Optics Planet finally got it in stock so I snatched it up. Not only does this look great it also covers the threads on the Strike industries buffer tube for those...
Read More...
2/2 found this helpful
Helpful Positive Review
Great Build Part by J, Verified Owner, August 7, 2022
I have installed these on my last two builds, and I really do prefer them. The extended endplate moves the QD point further away from the pistol grip, which keeps the sling off the back of my hand. The extended castle nut covers the exposed threads o...
Read More...
2/2 found this helpful
Read All 60 Reviews

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Product Info for Strike Industries AR Enhanced Castle Nut and Extended End Plate

The Strike Industries Enhanced Castle Nut and End Plate stands out from the competition in both aesthetics and function. These AR15 Lower Parts by Strike Industries feature a steel castle nut that has been lengthened to match the extended end plate to provide additional support of the receiver extension's threaded area. The extended end plate of the Strike Industries Caste Nut and End Plate Combo includes a quick-detach sling swivel mount that is pushed back and away from the webbing of your primary hand to allow firearm manipulation in tight spaces. Easily drop in and install this Strike Industries Quick-Detach Castle Nut and End Plate on your AR platform rifle!image

WARNING: California`s Proposition 65

Specifications for Strike Industries AR Enhanced Castle Nut and Extended End Plate:

Manufacturer: Strike Industries
Condition: New
Quantity: 1
Gun Make: AR Platform

Features of Strike Industries AR Enhanced Castle Nut and Extended End Plate

  • Aesthetic upgrade
  • Centrally placed QD for right or left hand sling use
  • Easy drop in installation
  • Simplified installation of takedown pin and detent via set screw.
  • Compared to a standard castle nut and end plate, the fully collapsed position, with most stocks, is eliminated in order to create proper clearance for the QD socket.

Package Contents:

  • Strike Industries AR Enhanced Castle Nut and Extended End Plate
  • 1x Enhanced Castle Nut
  • 1x Enhanced End Plate
  • 1x Warning card

Strike Industries AR Enhanced Castle Nut and Extended End Plate Orderable Models

List of Orderable Models

  • Strike Industries AR Enhanced Castle Nut and Extended End Plate, Black, One Size, SI-AR-ECN&EEP-BK , MPN: SI-AR-ECN&EEP-BK , UPC: 708747545548 , Code: 3Q-CAN-SARCN-SI-AR-ECN-EEP-BK
  • Strike Industries AR Enhanced Castle Nut and Extended End Plate, Red, One Size, SI-AR-ECN&EEP-RED , MPN: SI-AR-ECN&EEP-RED , UPC: 708747545609 , Code: 3Q-CAN-SARCN-SI-AR-ECN-EEP-RED
  • Strike Industries AR Enhanced Castle Nut and Extended End Plate, FDE, One Size, SI-AR-ECN&EEP-FDE , MPN: SI-AR-ECN&EEP-FDE , UPC: 708747547078 , Code: 3Q-CAN-SARCN-SI-AR-ECN-EEP-FDE
  • Strike Industries AR Enhanced Castle Nut and Extended End Plate, Blue, One Size, SI-AR-ECN&EEP-BLU , MPN: SI-AR-ECN&EEP-BLU , UPC: 708747545616 , Code: 3Q-CAN-SARCN-SI-AR-ECN-EEP-BLU

Strike Industries AR Enhanced Castle Nut and Extended End Plate Unavailable & Discontinued Models

List of Unorderable Models

  • Strike Industries AR Receiver Enhanced Castle Nut with Extended QD Endplate in Grey, Gray, SI-AR-ECN&EEP-GY , MPN: SI-AR-ECN&EEP-GY , UPC: 708747545623 , Code: 3Q-CAN-SARCN-SI-AR-ECN-EEP-GY
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