MasterPiece Arms MPA22T Defender Series .22 LR Semi-Auto Pistol, Top-Cocking, 5 in Barrel, 25+1, Phosphate Finish
The MasterPiece Arms MPA22T Defender Series is a purpose-built .22 LR, top-cocking MAC-pattern pistol introduced circa 2010. This USA-made variant features robust steel construction with a phosphate finish, a full-length Picatinny top rail, and a 25+1 capacity using detachable single-stack polymer magazines. Its distinctive top-mounted charging handle and right-side ejection define the model and make it easy to identify.
Built on a steel upper and lower with a phosphate finish, the MPA22T uses a simple blowback, closed-bolt action and a manual rotating selector safety. The polymer grip sleeve provides a secure hold while maintaining the MAC-style rectangular profile. The top-mounted charging handle runs in a longitudinal slot, with the recoil system visible through the upper slot.
Factory specs list a 5-inch barrel, an overall length of about 10 inches, and a weight of about 3.12 lb. Capacity is 25+1 with the included MPA-branded 25-round polymer magazine. The right-side ejection port and top-cocking layout are true to the platform’s design cues.
A full-length Picatinny rail is installed along the top of the upper receiver. As one of the first factory-produced MAC-style pistols purpose-built for .22 LR, the MPA22T stands out for combining familiar MAC ergonomics with a dedicated rimfire configuration.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Fair Rifling - Worn rifling, slight loss of definition.
Specific Condition Notes: This example presents well for its vintage. The exterior shows scattered scratches and blemishes consistent with prior handling. The rifling displays visible blemishing.
What’s Included
- 1 MPA-branded 25-round polymer magazine
- Full-length Picatinny top rail (installed)
The MPA22T’s top-cocking system is a defining feature, identifiable by the longitudinal slot on the upper and the top-mounted charging handle. The right-side ejection port and exposed recoil spring/guide visible in the upper slot are characteristic of this variant.
The steel frame and receiver, both finished in phosphate, provide durability and a uniform appearance. A polymer grip sleeve completes the MAC-pattern profile, and the manual rotating selector serves as the primary safety control.
Designed for detachable single-stack polymer magazines, this pistol offers a 25+1 capacity in .22 LR. The included MPA-branded 25-round magazine matches the factory configuration.
Factory dimensions list a 5-inch barrel, about 10 inches overall length, and approximately 3.12 lb in weight. The full-length Picatinny rail is installed from the factory, running the length of the upper.