ProMag magazines are designed utilizing both traditional stamping and welding of heat-treated high carbon steel, and modern precision injection molding of mil-spec polymer compounds. Every ProMag magazine is backed by a lifetime guarantee against manufacturer's defects. This Auto Ordnance Thompson Drum Magazine ifrom Promag s constructed out of DuPont Zytel based polyer.

Specifications and Features:
Manufactured from Durable DuPont Polymer
Caliber: .45 ACP
Capacity: 40 Rounds
Magazine spring formed from heat treated stainless steel
Injection molded magazine follower
Made in the USA
Black

Fits: Auto-Ordnance Thompson .45 ACP Rifles and Pistols