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AR-15 Carbine Castle Nut TAPCO INTRAFUSE 4140 Steel Manganese Phosphate Made In The U.S.A. 16621

Ships from Warehouse 1
Typically ships the same business day when ordered before 4pm CST.
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Machined from 4140 steel with a manganese phosphate coating, the INTRAFUSE Castle Nut is an excellent replacement part or is ideal when building new rifles.

Specifications and Features:
Manufactured from 4140 Steel
Manganese Phosphate Finish 

Item#: 20-TC-16621,ARR-951,3-1024398,6-1024398,9-62482
Total number of Reviews: 6

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5.0 5
"Perfect fit, no issues to install in a project AR15. Highly recommend the purchase of an AR15/M16 tool/wrench to properly tighten this down."
– MAJ Mike
5.0 5
"Threads and finish are great. Cheapest and most durable castle nut at this price. Will buy again. Great Deal."
– ZA_Survivalist
5.0 5
"Bough three - one for a friend's rifle and two as extras or future builds. They work well. I don't like all of Tapco's stuff, but this one's a keeper."
– Jack G
5.0 5
"Replaced the original castle nut on my Stag-15 2L (which had an unfortunate deep scratch) w/this one. Excellent fit. Make SURE you invest in a castle nut wrench. Tapco's rubber-handled wrench worked great for this job."
– p99shooter
4.0 5
"The castle nut went on smoothly with the stem for the collapsable stock I bought. Shipping was fast and as always excellent service! Dont forget tapcom tool to make a tight assembly!"
– Bleslie
5.0 5
"Better quality than my stock mil spec factory one way more stout. Put on M4 buffer tube looks and works great. Would recommend!"
– Russ772