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Matador Arms 9mm MAT-9 Upper Receiver

Want a fully self-contained 9mm upper that is ready to shoot suppressed out of the box? What about a complete 9mm upper that allows you to use your pistol magazines with little or no modifications required to play? Matador Arms has your back with its MAT-9 blowback upper that is also bufferless.

Matador Arms has a complete 9mm upper receiver that is ready to go straight out of the box, including shooting suppressed. (Photo credit: Matador Arms)

The MAT-9 was designed for maximum weight reduction, a slim profile, and compatibility with bolt catches and lower receivers, according to Matador Arms. It is comprised of anodized 6061-T6 aluminum, nitride steel bolt and action parts, and a lightweight 7.825” nitride threaded barrel. The upper is compatible with Last Round Bolt Hold Open, or LRBHO, lower receivers.

The MAT-9 can be configured in two different ways: Native mode and Conversion mode. The Native mode runs with double-stack magazines. In the Conversion mode, the AR-15 lowers require a Mag-X magazine conversion kit to make it work with double-stack magazines. In either mode, the MAT-9 will work with almost all 9mm magazines. The magazine conversion kit is required on some Glock and Sig Sauer models, like the Glock 17, Glock 19, and Sig Sauer P320.

Rear view of MAT-9
The MAT-9 is a blowback AR-style upper that is compatible with folding buttstocks and LRBHO lower receivers. (Photo credit: Matador Arms)

According to Matador Arms, the upper is built with a tapered 4-piece trunnion system made from different materials to keep mechanical accuracy and durability. Rounding out some other features for the MAT-9 is a non-reciprocating ambidextrous steel charging handle, NATO 1913 top rail, and M-LOK slots on both sides and bottom.

The Matador Arms MAT-9 is compatible with side-fold buttstocks and has a patent-pending Easy Take-down System (EZTS). The EZTS means that the upper doesn’t require any tools for breaking it down making it easier for maintenance or cleaning.

While there is no word on overall weight or length, that information will probably be readily available after SHOT Show 2023. The MAT-9 complete 9mm upper from Matador Arms is available now with a price tag of $600.