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Battle Arms Development AR-15/M16 Receiver Extension Nut 9390020

Battle Arms Development Receiver Extension Castle Nut, Mil-Spec, AR-15/M16, Black 9390020
Battle Arms Development Receiver Extension Castle Nut, Mil-Spec, AR-15/M16, Black 9390020
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Battle Arms Development Receiver Extension Castle Nut, Mil-Spec, AR-15/M16, Black 9390020

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Questions & Answers
Is the finish magnesium-phosphate parkerizing like Badger Ordnance parts? Expert Answer

It is mil-spec so it should be finished with manganese phosphate.

by Armando R., Gear Expert, December 23, 2019
View All Q&A You Have a Question? Ask!

Product Discontinued by Manufacturer

Battle Arms Development AR-15/M16 Receiver Extension Nut has been discontinued by Battle Arms Development and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Lower Parts yourself to try and find the perfect replacement for you!

Product Info for Battle Arms Development AR-15/M16 Receiver Extension Nut

AR15/M16 Receiver Extension Lock Nutimage

Mil-spec. receiver extension lock nut (castle nut) for use on AR15 carbines with an adjustable stock.

Perfect for your new build or as a direct replacement for worn out parts.

Package Contents:

  • Battle Arms Development AR-15/M16 Receiver Extension Nut

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Battle Arms Development AR-15/M16 Receiver Extension Nut Unavailable & Discontinued Models

List of Unorderable Models

  • Battle Arms Development Receiver Extension Castle Nut, Mil-Spec, AR-15/M16, Black, 9390020 , MPN: 9390020 , UPC: 810033781322 , Code: 2OS-CAN-BADGP10-9390020
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Last updated 2026-08-01 UTC.