MPA Defender Side-Cocker Pistol, 9mm, Threaded, Black, 30-Round

The MPA Defender side-cocker pistol in 9mm with a threaded barrel and black finish (brand part no. MPA30SST) is a large-format pistol built on an aluminum lower receiver, giving shooters a stabilized, rifle-caliber-adjacent platform chambered in 9mm. MasterPiece Arms threads the barrel to 1/2×28 for suppressor use, and the side-cocker design keeps the charging handle off the top rail for unobstructed optics mounting. A lower-receiver-mounted short rail, an adjustable rear sight, and a scope mount give shooters multiple ways to configure the platform, and the pistol ships with a 30-round polymer magazine, a mag loader, and a gun case. Among large-format 9mm semi-auto handguns, this MPA Defender configuration favors shooters who want a stabilized, high-capacity 9mm platform.

Key Specifications

• The chambering is 9mm.
• The capacity is 30 rounds with the included polymer magazine.
• The barrel measures 4.5 inches and is threaded 1/2×28 for suppressor use.
• The design is a side-cocker, keeping the top rail clear for optics.
• The lower receiver is aluminum, with a short accessory rail.
• The sights are adjustable, and a scope mount is included.
• The pistol ships with a 30-round magazine, mag loader, and gun case.
• The safety is a Lever Action safety.
• The action is Semi-Auto.

Frequently Asked Questions

Is this pistol suppressor ready? Yes, the barrel is threaded 1/2×28 for suppressor use.

What does the side-cocker design offer? It keeps the charging handle off the top rail, leaving it unobstructed for optics mounting.

Buy the MPA Defender Side-Cocker Pistol

A stabilized, rifle-caliber-adjacent 9mm platform on an aluminum lower receiver is exactly what this MPA Defender Side-Cocker Pistol delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.