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Questions & Answers
Will this upper work on a Mega arms Matten lower Expert Answer

Unfortunately, this product has been discontinued and we no longer have that information available. We recommend reaching out to the manufacturer for this inquiry. Their contact information can be found here: https://www.armalite.com/contact/.

by Tiffany S., Gear Expert, July 18, 2019
Customer Reviews
Most Recent Reviews
AR 10 Stripped Upper by Dane, March 26, 2019
Optics Planet put the order together quickly and shipped it out. All of the components fit very well and the finish looks to be top quality. Plus the shipment came a day early. These guys make purchasing much easier with their wide variety of compone...
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Product Discontinued by Manufacturer

ArmaLite AR-10 A4 A-Series Upper Receiver Assembly 7.62x51mm/.308 Winchester A10002001 has been discontinued by ArmaLite 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 Upper Receivers yourself to try and find the perfect replacement for you!

Product Info for ArmaLite AR-10 A4 A-Series Upper Receiver Assembly 7.62x51mm/.308 Winchester A10002001

Complete upper receivers include: AR-10 port door assembly (EA1165), AR-10(T) port door rod (EA1171), AR-10 / M-15 port door spring (EA1167), and AR-10 forward assist kit (10005001KIT). AR-10-A4 complete upper is our standard flat top upper with the standard port door rod used for all AR-10's that will utilize a 2-piece handguard. If a free float handguard is to be used, the 10002000 AR-10(T) complete upper is needed. Forged flat-top with MIL-STD 1913 rail and laser engraved rail numbering, 7075-T6 aluminum. Thread Size: 1 - 7/16X18. Chambered in 7.62x51mm/.308 Winchester.image

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ArmaLite AR-10 A4 A-Series Upper Receiver Assembly 7.62x51mm/.308 Winchester A10002001 Unavailable & Discontinued Models

List of Unorderable Models

  • ArmaLite AR-10 A4 A-Series Upper Receiver Assembly 7.62x51mm/.308 Winchester , MPN: A10002001 , UPC: 651984002216 , Code: A87-UPR-A10002001
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