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Questions & Answers
Where is this part made? Expert Answer

All three items on this page are made in the USA.

Mark H.

by Mark H., Gear Expert, December 18, 2018
Customer Reviews
Helpful Positive Review There is a difference by Gary K, Verified Owner, February 20, 2021
I did not think there was a difference in castle nuts, but there is. I put this one in my cart to make my minimum purchase but realized that the parkerized and robust castle nut is heavy duty and is the one ill buy for all my other builds.
3/3 found this helpful
Helpful Positive Review Lightweight, Looks great! by Josh, Verified Owner, November 2, 2018
If you have built a few lowers, you probably know how certain parts like castle nuts don't bring the same amount of fizzle as others. I am happy with the quality and I don't see why this castle nut wouldn't hold up to any level of normal use for a v...
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10/10 found this helpful
Helpful Positive Review Mil-spec castle nut by Butters, Verified Owner, August 9, 2018
So the picture doesn't change if you select the standard version. But it is the mil-spec style castle nut sans lightening cut/groove. Good unblemished consistent finish on the part. Two thumbs up to Spike's for not skimping on QC for a basic componen...
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1/1 found this helpful
Helpful Positive Review Does What A Castle Nut Is Suppose To Do by Connor, June 23, 2020
I've experienced junky castle nuts in the past. This isn't one of them. It's clean, well-made, crisp lines, and has a good finish. They're inexpensive, too. So I keep a few extra in my stash of spare parts. It's a small investment, but definitel...
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1/1 found this helpful
Helpful Positive Review Spikes Tactical Quality Castle Nut by Tactical Reviews, July 16, 2020
This is a great castle nut for your BUIS the sale price is also great, mil-spec castle nut that should perform like its mean’t to. Spikes Tactical only offers top quality products! These are built to last and will get you through your build with out ...
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1/1 found this helpful
Helpful Positive Review Crome not just cheap steel. by Mike Inmichigan, Verified Owner, October 22, 2020
Solid castle nut that resists smearing. Very nice threading. Perfect. Finish is nice too. Matches my black gun. Very satisfied with the quality. I have spares now. This thing wants more text so....keep your powder dry.
2/2 found this helpful
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Product Info for Spikes Tactical Lightweight Chromoly Castle Nut

Ensure a proper fit to your buffer tube by using a Spikes Tactical Lightweight Chromoly Castle Nut. Spikes Tactical machined these AR15 Lower Parts from 4140 Chromoly material and then added a Melonite finish to resist corrosive elements. When you swap in this Spikes Tactical SLA501N Lightweight Castle Nut, you'll reduce your build by 0.13oz in comparison to a standard castle nut. Save weight by using the sturdy and rugged Spikes Tactical Lightweight 4140 Chromoly Castle Nut.image

Specifications for Spikes Tactical Lightweight Chromoly Castle Nut:

Manufacturer: Spikes Tactical
Condition: New
Country of Origin: USA

Features of Spikes Tactical Lightweight Chromoly Castle Nut:

  • Material: 4140 Chromoly
  • Finish: Black Nitride
  • Features: Machined Staking Notches
  • Weight: .53oz

Package Contents:

  • Spikes Tactical Lightweight Chromoly Castle Nut

Spikes Tactical Lightweight Chromoly Castle Nut Orderable Models

List of Orderable Models

Spikes Tactical Castle Nut - Buffer Tube to Receiver Mil-Spec, SLA501N , MPN: SLA501N , UPC: 855319005235 , Code: 2A8-CAN-LCCN-SLA501N
Spikes Tactical Castle Nut - Lightweight - Phosphate, SLA501N-LW , MPN: SLA501N-LW , UPC: 855713006944 , Code: 2A8-CAN-LCCN-SLA501N-LW

Spikes Tactical Lightweight Chromoly Castle Nut Unavailable & Discontinued Models

List of Unorderable Models

USED Spikes Tactical Castle Nut - Buffer Tube to Receiver Mil-Spec, SLA501N, EDEMO1, Condition Parts Only/Salvage, Defective , MPN: SLA501N-EDEMO1 , Code: 2A8-CAN-LCCN-SLA501N-EDEMO-DF-F
USED Spikes Tactical Castle Nut - Lightweight - Phosphate, SLA501N-LW, EDEMO4, Excellent, Inspect and Rebox , MPN: SLA501N-LW-EDEMO4 , Code: 2A8-CAN-LCCN-SLA501N-LW-EDEMO-RE-B
USED Spikes Tactical Castle Nut - Lightweight - Phosphate, SLA501N-LW, EDEMO5, Used, Condition Like New, Inspect and Rebox , MPN: SLA501N-LW-EDEMO5 , Code: 2A8-CAN-LCCN-SLA501N-LW-EDEMO-RE-A
USED Spikes Tactical Castle Nut - Lightweight - Phosphate, SLA501N-LW, EDEMO3, Good, Inspect and Rebox , MPN: SLA501N-LW-EDEMO3 , Code: 2A8-CAN-LCCN-SLA501N-LW-EDEMO-RE-C
Spikes Tactical Castle Nut - Mil-Spec - Titanium, SLA501N-T , MPN: SLA501N-T , UPC: 855713006951 , Code: 2A8-CAN-LCCN-SLA501N-T
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