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Questions & Answers
Does this have LRBHO? Expert Answer

The Matrix Arms AR-15 9mm Stripped Upper Receiver does have the LRBHO feature. So as long as you use an AR9 lower with a LRBHO feature, it will work as intended.

by Ethan, Gear Expert, March 23, 2022
Do drop in 22lr conversion kits work with this ? Expert Answer

The Matrix Arms AR-15 9mm Stripped Upper Receiver is designed for 9MM BCG's and uses a smaller ejection port. I would recommend using a standard Mil-spec AR15 stripped upper like the one provided in the link below.
https://www.opticsplanet.com/trybe-defense-ar-15-complete-upper-receiver-type-ii-w-dust-cover-forward-assist.html

by Ethan, Gear Expert, January 31, 2022
Customer Reviews
Most Recent Reviews matrix 9mm upper receiver by Jon Park, Verified Owner, May 28, 2024
Good fit and finish! Compatible with Aero/Palmeto Armory parts! Waiting for my lower to arrive but tried on my other aero lowers with no issue! Priceworthy
0/1 found this helpful
Most Recent Reviews matrix Arms 9mm upper receiver by Jon Park, Verified Owner, June 4, 2024
New to Matrix Arms uppers but after dry fitting with my lower aero product fits with no issues! Well made solidly built and interchangeable with my other builds! Still building but no issues with any parts fitting or ops yet!
0/1 found this helpful
Read All 2 Reviews
Color: Black Finish: Hardcoat Anodized Fabric/Material: 7075 Aluminum Gun Make: AR Platform Gun Model: AR-15 Condition: New Hand: Right

Code: 4U8-UPR-MAUR159-MA9U

MPN: MA9U

List: $129.99Save 31%
$89.99

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Product Info for Matrix Arms 9mm Stripped Upper Receiver

Build a lighter, more precise firearm with the help of this Matrix Arms AR-15 9mm Stripped Upper Reciever. Matrix Arms machined these AR15 Upper Receivers from Mil-Spec 7075 T-6 aluminum forgings to create an incredibly rugged platform that won't weigh you down. This Matrix Arms AR15 9mm Stripped Upper Receiver features a 1913 Picatinny rail on the topside to ensure compatibility with a wide variety of sights and attachments that will assist your aim in the field. When you equip this Matrix Arms AR-15 9mm Hardcoat Anodized Stripped Upper Reciever, you get a Mil-Spec 7075 T-6 aluminum receiver with a highly durable anodized finish that can resist corrosion and abrasion.image

WARNING: California`s Proposition 65

Specifications for Matrix Arms 9mm Stripped Upper Receiver:

Manufacturer: Matrix Arms
Color: Black
Finish: Hardcoat Anodized
Fabric/Material: 7075 Aluminum
Gun Make: AR Platform
Gun Model: AR-15
Condition: New
Hand: Right

Package Contents:

  • Matrix Arms AR-15 9mm Stripped Upper Reciever

Matrix Arms 9mm Stripped Upper Receiver Orderable Models

List of Orderable Models

Matrix Arms Stripped Upper Receiver, 9mm, Hardcoat Anodized Finish, Black, MA9U , MPN: MA9U , Code: 4U8-UPR-MAUR159-MA9U
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