MasterPiece Arms MPA10T Defender Series Top Cocker .45 ACP Semi-Automatic Pistol with Threaded Barrel & 30-Round Magazine
The MPA10T Defender Series combines the iconic MAC-10 silhouette with modern, semi-automatic engineering. Built in the USA from solid steel and finished in matte black phosphate, this top-cocker variant offers reliable blowback operation, a factory-threaded barrel for muzzle devices or suppressors, and compatibility with rugged WWII M3 grease-gun magazines. Its compact size, ample 30-round capacity, and integrated Picatinny rail make it a versatile choice for shooters and collectors seeking a distinctive .45 ACP platform.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Good – Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling – Intact, well-defined lands and grooves.
Specific Condition Notes: This firearm is in solid shape. There are some scratches and blemishes present. Bore is clean and shiny.
What’s Included
- 1× 30-round steel M3 grease-gun pattern magazine
- Threaded barrel extension / faux suppressor
- MasterPiece Arms Defender hard case
- Informational pamphlet
The MPA10T uses a 5.8-inch threaded steel barrel cut with a 7/8-9 TPI thread pattern, allowing direct attachment of factory accessories or most common .45-caliber suppressors. A removable barrel extension ships installed for immediate muzzle protection.
Its top-mounted charging handle keeps both sides of the receiver smooth, while the bottom 1.5-inch Picatinny rail lets the shooter add lights or lasers without aftermarket modifications. Fixed welded iron sights—a hooded front post and aperture rear—offer a rugged, no-shift sighting system.
This Defender Series pistol operates from a closed bolt, delivering improved accuracy over early open-bolt designs. The rotary selector safety provides simple, positive control, and the paddle-style magazine release works seamlessly with the included 30-round M3 magazine.
Steel construction throughout the frame, receiver, and barrel delivers durability and weight that helps tame .45 ACP recoil. Finished in a corrosion-resistant manganese-phosphate matte black, the pistol is built for long service life and straightforward maintenance.