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Promag
Promag
The Promag MP5 9mm 50-round drum magazine is a high-capacity option for MP5 and PTR9 platforms in 9mm. If you run an MP5 cloner, a PTR9, or other compatible 9mm platforms and want to maximize rounds on board without frequent reloads, a 50-round drum offers serious capacity in a single magazine. This is built around a proprietary polymer housing engineered for reliability and durability in real-world use.
Construction matters with drum magazines, and Promag has designed this one with reinforcement where it counts. The magazine upper tower features an over-molded, heat-treated carbon steel feed lip—the wear point that takes the most punishment during load, feed, and extraction cycles. The follower is injection-molded for consistent feeding, and the spring is heat-treated stainless steel to maintain tension through thousands of rounds. That approach adds up to a magazine that should keep working when you need it.
The housing itself is built from a proprietary DuPont Zytel-based polymer, a material chosen for its toughness and resistance to stress cracking. Made in the USA, this drum is a no-frills capacity play—useful for training, competition, and any scenario where you want more rounds loaded and fewer reload drills. It's not the lightest magazine on the rack, but 50 rounds in one magazine beats swapping five 10-round sticks.
| Magazine Type | Drum |
| Capacity | 50 rounds |
| Caliber | 9mm |
| Fits | MP5, PTR9 |
| Housing Material | DuPont Zytel-based polymer |
| Feed Lip Reinforcement | Over-molded, heat-treated carbon steel |
| Follower | Injection-molded polymer |
| Spring | Heat-treated stainless steel |
| Country of Origin | Made in USA |
| Color | Black |
Yes. This drum magazine is designed to fit MP5 and PTR9 9mm platforms. Always function-test any new magazine in your firearm before relying on it.
The spring in this Promag drum is heat-treated stainless steel, which helps it maintain tension over extended use. Like any magazine spring, performance can degrade with age and heavy use, but the stainless steel construction is designed to resist corrosion and maintain spring memory longer than untreated alternatives.
Yes, the Promag MP5 50-round drum magazine is manufactured in the USA.
The magazine upper tower features a heat-treated carbon steel feed lip reinforcement that is over-molded into the polymer housing. This hybrid design puts a hardened steel surface where rounds feed and cycle, reducing wear and helping the magazine maintain reliable feeding through thousands of rounds.
The Promag MP5 9mm 50-round drum magazine is a high-capacity option for MP5 and PTR9 platforms in 9mm. If you run an MP5 cloner, a PTR9, or other compatible 9mm platforms and want to maximize rounds on board without frequent reloads, a 50-round drum offers serious capacity in a single magazine. This is built around a proprietary polymer housing engineered for reliability and durability in real-world use.
Construction matters with drum magazines, and Promag has designed this one with reinforcement where it counts. The magazine upper tower features an over-molded, heat-treated carbon steel feed lip—the wear point that takes the most punishment during load, feed, and extraction cycles. The follower is injection-molded for consistent feeding, and the spring is heat-treated stainless steel to maintain tension through thousands of rounds. That approach adds up to a magazine that should keep working when you need it.
The housing itself is built from a proprietary DuPont Zytel-based polymer, a material chosen for its toughness and resistance to stress cracking. Made in the USA, this drum is a no-frills capacity play—useful for training, competition, and any scenario where you want more rounds loaded and fewer reload drills. It's not the lightest magazine on the rack, but 50 rounds in one magazine beats swapping five 10-round sticks.
| Magazine Type | Drum |
| Capacity | 50 rounds |
| Caliber | 9mm |
| Fits | MP5, PTR9 |
| Housing Material | DuPont Zytel-based polymer |
| Feed Lip Reinforcement | Over-molded, heat-treated carbon steel |
| Follower | Injection-molded polymer |
| Spring | Heat-treated stainless steel |
| Country of Origin | Made in USA |
| Color | Black |
Yes. This drum magazine is designed to fit MP5 and PTR9 9mm platforms. Always function-test any new magazine in your firearm before relying on it.
The spring in this Promag drum is heat-treated stainless steel, which helps it maintain tension over extended use. Like any magazine spring, performance can degrade with age and heavy use, but the stainless steel construction is designed to resist corrosion and maintain spring memory longer than untreated alternatives.
Yes, the Promag MP5 50-round drum magazine is manufactured in the USA.
The magazine upper tower features a heat-treated carbon steel feed lip reinforcement that is over-molded into the polymer housing. This hybrid design puts a hardened steel surface where rounds feed and cycle, reducing wear and helping the magazine maintain reliable feeding through thousands of rounds.
